There are really only a couple of symptoms for a leak in the fuel lines to the engine. Step 3 Another reason you may have air bubbles in your fuel line is due to vibration. Periodically it doesn’t want to accelerate, like there is a fuel restriction or possibly an air leak in the line. Runs fine at 3/4 speed. Marine: Boating, Sailing, PWC, Nautical Navigational GPS - Outboard Gas Line Connection Leak - I have a 30 hp Johnson outboard. Have us Repair your DIAPHRAM. Test leaking Fuel Injectors.. Fuel injector leak testing should be done under operating pressure. Finding Outboard Fuel Pumps, Filters and Lines. Fix of a Yamaha no start, hard start, caused by bad fuel connector and bad hose. The first applies to both VRO and premix engines. Your email address will not be published. Some leaks … If your vehicle has an engine vacuum leak, the air-fuel ratio in your engine will be higher than 14.7:1, also called a “lean” mixture. Here are a few ways to remove air from a fuel line, a truly problematic experience. I will never buy another one of those again. I checked the fuel filters and one was low on fuel. So the outboard sees a lot more wear and tear and can wear out more quickly. Best to replace the entire line, bulb and connector asap if the engine won’t idle but is OK at higher rpm. It’s fabric-reinforced and one-piece construction—no “liner” to collapse and stop fuel flow. Check all fuel line connections and hose clamps. Gotta be between the tank and the engine, then. It wouldn’t start up after that. Had it happen to me. Remove the screws and place the tubing above and below each screw. Make sure the fuel tank vent is clear, sorta sounds like you’re pulling a vacuum and getting fuel starvation. Hi! Auto-parts or “small engine” (lawnmower) shops here charge $2.00—$2.50 a foot for 1/4″ or 5/16″ ethanol-resistant line, and I don’t think it’s u.v. Air in the fuel system is another possible trouble that may prevent an engine from starting. Blow into 1 end of the tubing and look for any bubbles in the water. Question. It does not appear that the filter housing has any air leaks now. Could you use more help in making the transition to living aboard? Any suggestions? Check out all the special deals from our podcast sponsors! The outer layer of yacht braid makes good protection, as noted earlier. You can cut a lot of hoses out of a 25′ spool, and don’t have to waste hose since you can cut the length you need for each application. When you’re checking the fuel filters, give the fuel pump’s inlet and outlet fuel lines a close inspection too. This happens over and over again, because many quick-disconnect fittings that attach the fuel line to the outboard are just plain cheap. It was leaking at the gas line … We’ve used non-ethanol gas more often than not; when we’ve used gas with ethanol, we used a gas additive as well. And it wasn’t cheap either. Either the lift pump has failed, the boat is out of fuel or there is an air leak or blockage somewhere in the fuel lines running fuel from the tank to the engine. These issues … This is a 60 hp evinrude. I finally got it started and took off, got about 400yd away from the dock, stopped to get something in the boat and the motor died. With time, all of these connections tend to start leaking or allow air to get sucked in. Is there a fuel filter in there (that you bypassed when on the portable tank)? Troubleshooting Outboard Fuel Lines. It’s understandable. protected. If attempts to turn down the idle speed adjusting screw have failed (old-make carburetor), it means the blend of air to fuel ratio has changed in favor of too much air passing into the intake manifold. ), gained a great boat dog, had a bunch of wonderful times and some adventures . Finding this page could save you so much time! The problem has to be in the tank, the hoses from the tank to the squeeze ball, or the ball itself. If air gets into the fuel system then the lift pump is pumping fuel and air to the VST. Sure as long as you’ve got that much room. Your email address will not be published. When I was a kid with an a 7 HP Sears outboard engine, the fuel line once split open on me and sprayed both me and the boat with gas. New rubber DIAPHRAMS from ThePelicanServices.com will cure and correct these symtoms. . Keep your fuel lines free of air to help keep your car running smoothly. Thanks. The same goes for the barbs that attach the fitting and the fuel line, and/or the hose clamps that secure them. 2 – Automotive fuel hose works on positive pressure, where the fuel pump in the top of the fuel tank pushes the fuel through the hose. Either type of hose can have a problem. On any line older than 5 years, the sun causes the bulb, rubber end connector inserts, and fuel line to age, shrink, harden and crack, leading to tiny air leaks that prevent the fuel pump from pulling gas into the motor, especially at idle. and so on, eventually dying. Heat shrink tubing is a good look. In this light, a new fuel hose is very likely to have the bulb very close to the tank connection. Only several entries above mention the possibility of a clogged or closed fuel tank vent, which would seem to be indicated by my own problem with a 2006 Hurricane boat with 150 HP 4-stroke Honda outboard, I say this because my problem is always an easy start, then good operation at full throttle for a predictable amount of time … and then a stall requiring a re-priming using the bulb. My exact same experience with “crap-wood” hoses! An easy fix to this is to insulate your mounting screws with fuel tubing. You have to go over the entire fuel system from tank pickup to injectors. I'm pretty sure I've got a leak somewhere in the fuel lines, when the engine is cold is runs rough for 5-10 seconds before smoothing out. If you’re not getting fuel to the squeeze balls, I’d look at the pickup tube in the tank. Xantia 1.9 TD 1995 92000m NB. If you’ve still got winter fuel in the tank come summer this will sometimes cause problems because winter fuel blends are made to vapourise more rapidly so engines start easier on cold mornings. • Popular articles you may have missed Consider an air leak in the fuel line on the input side of the pump, or as d.boat says, in the incoming oil line (or cap). Xantia 1.9 TD 1995 92000m NB. This leans out the fuel mixture which raises the engine speed. Best to replace the entire line, bulb and connector asap if the engine won’t idle but is OK at higher rpm. If there’s no visible fuel leak, the ball may be sucking in air; squeeze it again and again with your ear next to each connection, as you listen for a gurgle. We’ll find a sleeve of some sort so we don’t end up with a UV problem. Replaced the water separator and primer ball and it ran fine for a day then back to cutting off and the ball deflating. Click here. Here’s how to rest better. I’d say you have an EXCELLENT blog! Do you mean disconnect the tube that feeds gas to the fuel pump, attach the bulb to blow into the tube, see if I can blow air through it, thus finding an air leak? Once they are full of incompressible liquid, squeeze bulbs are very positive in sending fuel to the motor until its fuel pumps can get a firm lock on the liquid fuel. Some leaks will do both. Symptoms include: over reving, overheating, stalling on acceleration, failure to idle, and worst of all, an engine seizure if the problem is neglected. My question is how to locate the venting method which is used on my boat and how to test it. Vacuum leaks occur between the cylinder head and carburetor slide/butterfly, where the low pressure will draw in air through the leak area. Realizing I need a general plan to look forward to was a change for me. . E-bay has several vendors. It gelled up inside and the carb needed to be cleaned. I run sea foam on a regular basis also. 1 – Automotive fuel hose is NOT approved by the USCG. Generally, for an engine that size, it’s either 1/4″ or 5/16″, I have problem bulb starts to pump up then goes flat and will not expand.I replaced bulb new hose and both ends but problem persist any help . If the problem persists, a trip to your mechanic is in order. When an engine fails to operate, stalls, misfires, or knocks, there may be air … Bad fitting connections and damaged flexible hoses being the most common. Most leakage trouble occurs in the fuel lines, but leaks may occasionally develop in the fuel tank. There are several reasons, but these are the biggest of them. Is it possible the gasoline gelled. How long did the gas sit in the hose? Even more issues caused by mandated ethanol. protected, low-permeation, suitable for all fuels (even E-85!) … Vapour has two main causes. Any air in the system needs to be vented (bled) before the engine will operate properly. Defective engine compartment ventilation, or clogged air filters, can therefore result in a loss of power. An increased and steady idle speed can be one of the best warning symptoms for detecting a carburetor air leak. The engine would run fine, then lose RPMs . Thanks so much. Thanks for the helpful info. I recommend looking for: - loose, broken or missing clamp on a fuel line filling - cracked fuel hose - cracked fuel fitting - loose screw-on fuel filter element/cup (if you have such a thing. No wonder fuel couldn’t get through! Clean out the carburetors? Fuel pump inlet clogged at “in” and 50%+ inside pump. Read our privacy policy. Again, consult your automotive manual or a professional if necessary. The fuel line, bulb, etc., are only a year old and I checked all the clamp/connections. Then we can hook up to a portable tank and boat run fine at WOT. I’m no mechanic, but I’m going to replace the pick up line. The hole had been caused by wear from the flexible line rubbing against a loom of wires (i.e. • New articles & podcasts If you see bubbles there are holes, and you will need to replace the tubing with new tubing. Been told it could be a bleed line … Got a ’97 Johnson 70HP. If you got inspected, you’ll get a polite invitation (or court order), during the hearing for the ticket they write you, to Coast Guard Boater Safety School (AKA Boater Time Out). If you suspect that your vehicle has a vacuum leak, read on to learn the most common symptoms, as well as how to fix them. My husband and I have been cruising over 13 years and 12,000 miles, first on a Tayana 37 monohull and now on a 34' Gemini catamaran. thank you! Noticed the primer ball is deflating. Fuel line looks ok but I didn’t cut into it. If so what should I use? IDO » Community » Forums » Fishing Forums » General Discussion Forum » Outboard fuel problems. and then come right back . The fuel pump will pull air into the fuel, and pump it through the system, up to the carbs, through the needle and seat, and into the carb bowls. Quick fix: put some grease on the end fittings at the tank and motor. I replaced all the hoses and fuel pump it still don’t get enough gas to go. The pickup on the tank is clear also. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, Chilton's or other mechanical manual for your year, make and model of car. The problem was that there was a pin hole in the flexible line connecting the fuel filter to the rigid line running back to the tank. ... test the line for leaks and be certain no restrictions exist. Another reason you may have air bubbles in your fuel line is due to vibration. You have to go over the entire fuel system from tank pickup to injectors. Buy marine certified fuel hoses. Since it doesn’t have the UV protection, we may try to cover the exposed portions of the hose with tubular webbing or even just tubes made from old t-shirts to give it some UV protection. . You can consult your automotive manual, or get the assistance of someone who is mechanically savvy if you are not. I didn’t know what it was at the time I thought it was some kind of gluey nasty buildup. [More] Forced Flexibility, Are you a new cruiser having trouble sleeping? The other suspects are the quick connect fitting seals. Big Sky Country Helena, MT (Adel, IA home) Posts: 1,160. Any suggestions would really be appreciated. Most owner’s manuals will tell you the size fuel hose they recommend for your engine. Take my free mini-course: Filed Under: Boat Work Tagged With: Boat Maintenance, Boat Projects - Repairs & Upgrades, DIY Tips, Overcoming. It can also cause down-time and loss of productivity. My [Yamaha F225 four-cycle outboard engine which has] 30-hours [of running time] started instantly after a Winter's layup. The Resource Center has four FREE mini-courses to guide you to just the info you need, whether you’re discovering what living on a boat would be like, preparing to cruise, overwhelmed with the first-year learning curve, or needing help with cooking aboard. and inexpensive. Outboard fuel problems. That liner can delaminate from the outer hose and cause blockages. Find results that contain... All of my search term words of my search term words If using automotive line, what primer bulb would you all recommend? The average DIY fuel injector cleaning project and most automotive repair shops does not have the proper diagnostic equipment or the ability to test leaking injectors or clean them properly. We will never sell your email or send spam. I’m going to make an automotive line and keep another line as backup. Put it back in, and the same symptoms. I'm Carolyn Shearlock. Once you have removed the tubing, clean it well and place it in a clear container filled with water. There are several methods to troubleshooting a stalling outboard engine. The amount of air needed is easy to under estimate – around one cubic metre per minute is required for every 10hp of engine power. Check if your Outboard runs better. This could result in fuel starvation at high throttle settings. I knew the outboard ran well, when it would run, but as soon as it started, it died in the following seconds. [More] Appreciating Family. If you have a fuel water separator with a … I just came by some very small firehose (quite a lot of it) and was wondering what all it could be used for… now it will cover my automotive fuel line that I’m going to change to asap. I posted this on another thread, got no opinions. They ain’t “worth” carryin’ out of the store–much less the $50.00 they cost (and that’s for their “universal” hose which has no “ends” !”) Thermoid brand hose is American made, u.v. Check to make sure there aren't pinholes in your fuel tubing. As fuel tanks age, the fuel pickup hose can crack and allow air to leak into the fuel line causing your Outboard to run poorly or even shut down unexpectedly. - bad seal in a quick-connect fuel fitting Any suggestions. That can … Outboard fuel problems. What is causing the rise in outboard fuel line problems? Some … In talking with clerks at the local NAPA store, West Marine, other cruisers and outboard mechanics, it seems that we are not alone in our outboard fuel line problems. Quick fix: put some grease on the end fittings at the tank and motor. I think it’s very likely that motor had one. In fuel-injected outboards, the excess gas that causes flooding might result from leaking injectors, failed engine temperature sensors or a failed electronic control module, the engine’s on-board computer that controls engine operation. Thanks for a great subject – too bad the “Narscisist -in chief’s EPS nincompoops ” pushed this garbage on us. Thankfully, I also had pretty much every thing in my dinghy ditch bag that your post about that mentions too. Quite possibly insufficient fuel to run the motor. Problems with your Mercury or Mariner Outboard DFI OPTIMAX . From the symptoms you describe, it sounds like you have an air leak in a fuel line. The Boat Galley can be overwhelming with over 1,200 articles. The Vacuum Method (Fuel Unit Test) Disconnect supply line at the fuel unit. Air bubbles in a fuel line can lead to stalling, hiccuping or refusal to start. And it can break free (delaminate) from the outer hose and twist itself up. All the more reason for a spare. Even if the engine will start, air in the fuel system will cause the engine to miss and knock, and perhaps to stall. I think I will start my first thread. Line from tank to motor (90hp mercury) completely clogged with this yellow/green grainy stuff. Your outboard may be stalling & running out of fuel due to three issues. This is where the fuel is being sucked and air can be sucked in anywhere that isn’t tightly sealed off. It is suggested that you have your leaking fuel injector sent to Injector RX for testing and cleaning. My 30 foot Bolger uses an outboard too. Be careful, liner causes issues. I split the hose lengthwise: Hard to get a good photo, but basically the liner appeared to be totally wadded up. https://mechanicbase.com/engine/vacuum-leak-symptoms-causes He couldn’t in two out of the three sections. Ethanol is a problem for a lot of reasons, not the least of which is fuel line decomposition, including delamination. Thanks. The first cut end of hose that I looked at didn’t seem to have a problem: But the second one looked a little funny: It looked like the inside of the hose had melted and twisted. Started first after engine was run then tilted forward for towing. Another symptom of a bad or failing fuel hose is visible fuel leaks. Either the engine randomly runs out of fuel and dies. Im pretty sure i have an air leak in my fuel line on my 70 hp johnson. On any line older than 5 years, the sun causes the bulb, rubber end connector inserts, and fuel line to age, shrink, harden and crack, leading to tiny air leaks that prevent the fuel pump from pulling gas into the motor, especially at idle. If any of the hoses break down, dry up, or wear out enough they will leak fuel. Store your fuel line out of the sun. I’M PREPARING TO CRUISE — HOW DO I GET READY FOR THIS?? If the leak is bad enough at idle, the fuel in the line could bleed back into the tank causing the pump to lose it's prime. Can the bad section be replaced with fuel hose? I’m having the same problem with my 2000 Yamaha 230 outboard. Did the gas gell in the carb? Funny, I think of ethanol as a “new” problem. If you see bubbles there are holes, and you will need to replace the tubing with new tubing. American Honda Motor Company is recalling several outboard motors for boats, saying fuel overflows from the vapor separator air vent tube.Honda issued the recall Thursday.They said a … When an air leak occurs, it often puzzles users and even some saw shop technicians because the symptoms of an air leak are varied. Guide to Storing Food without Refrigeration, " data-id="twitter" class="ss-twitter-color" data-ss-ss-network-id="twitter" data-ss-ss-post-id="18781" data-ss-ss-location="popup" data-ss-ss-permalink="https://theboatgalley.com/outboard-fuel-line-problems/" data-ss-ss-type="share" data-has-api="true" rel="nofollow">. If any of the hoses break down, dry up, or wear out enough they will leak fuel. The cover on double braid polyester rope can be used for UV protection. Ethanol rotted the fuel lines on my truck in 3 years. Help is here: Overcoming the First-Year Learning Curve (a free mini-course from The Boat Galley). What causes vapour and air leaks? This ratio means that there is too much air in your engine, and as a result, the engine will run poorly or not at all. Thus we decided to concentrate on an air leak. … The Westerbeke has an electric fuel pump on it, and if we did the bleed procedure — 30 to 60 seconds of pumping the fuel — it would start again and run well . That confirmed a blockage. Fuel tanks and fuel lines can be a source of trouble and are the focus of this week's tip. I knew it had to be sucking air some where. Is the tank vent open? The stall will also occur after a very long idle. I have a fuel issue on my center console. I forgot: Thermoid hose is (relatively) cheap @ $17.00 for 25 feet (with free shipping). RandomTroll December 7, 2017, 11 :44pm #23. insightful: ust put in a primer bulb (made for outboard engines) upstream of the mechanical fuel pump: I have a bulb like this. Keep your fuel lines free of air to help keep your car running smoothly. Misdiagnosis often causes unnecessary service costs and part replacement. Once determining fuel unit is air tight, check the supply lines for air leaks. I tried it myself. for a while. preparing to cruise • overcoming problems. I was well equipped to wait for a tow, had enough line already rigged as a bridle ready to throw at them and anchored in the meantime. The lines were full of that lining. I’VE STARTED CRUISING AND I’M FRUSTRATED AND OVERWHELMED, living on a boat • cooking & food • gear Do I need to wrap the threads on the tank fitting when replacing? Same Xantia as in Smokey start thread. What Are The Symptoms of An Air Leak? But blockages don’t cure themselves. Listen for unusually air sucking sounds as you squeeze. Just replaced fuel pump and all fuel lines. Great article, Lucky Read. Repair the leak and retest system by redoing steps 1-6. Most air leaks draw a very minute amount of air at low engine speeds. A vacuum leak is caused by extra air introduced into the fuel/air mix produced by the carburetors, which will lean out the mixture and cause poor running conditions. Store … The symptom could be surging. New hoses have an impermeable liner to keep ethanol from degrading the other hose material. Phase separation leaves globs of ethanol in the fuel that the engine cannot run on. We knew that the leak had to be somewhere between the tank and the fuel pump. Many thanks, If that doesn’t do it off to the mechanic it goes. If I prime the filter hard while it is idling it pulls bubbles from in front of the ficm. Automotive fuel hoses are made to withstand bursting from internal pressure, but they eventually collapse under vacuum conditions. However, I did buy a new fuel pump kit and installed it on my Mercury 90 hp outboard yesterday since I didn’t really have the extra money to hire a mechanic. Air bubbles in a fuel line can lead to stalling, hiccuping or refusal to start. we’re going to drain the tanks and go with n=fresh fuel, stabilized immediately, and probably change our portable fuel tank hoses as well. OEM hoses seem to last longer before showing problems. In a few days, squeezing the primer bulb does less and less, possibly getting to the point where there is no resistance in the bulb and it does not expand when released. How about pool noodles (and zip ties) to cover the line? . with a bad old hose from the 80s. Yeah, I’d definitely at least check your fuel hose. Can a leaking fuel supply line cause air to be sucked into the system and cause these symptoms? Thanks for the information. Would drip out of the bottom of cowling and into the rear of boat. But dies off at full throttle. Thank you thank you for this post! [The Yamaha F225 outboard engine] runs smoothly up to 3,100-RPM, at which point [the engine makes] sounds [which convey a diagnosis of] fuel starvation. Also, low engine use tends to dry out the Diaphrams. I'm pretty sure I've got a leak somewhere in the fuel lines, when the engine is cold is runs rough for 5-10 seconds before smoothing out. I think it very likely could have been the problem. Brandon West, these people have a good blog. Have you changed all the fuel hose from the tank to the motor. I’m a little confused about what you have done so far. ... you have blockage somewhere in the fuel line from the bulb to the fuiel ... July 17, 2006 at 11:47 am #460982. After that its fine. It is possible to have a vacuum leak that lets air into the fuel supply while fuel is not spraying out from the fuel system. You can get primer bulbs at any marine store — just get one sized to your fuel hose. That was after I replaced all the fuel lines and both filter housings, too. Squeeze bulbs tend to be far more forgiving of minute leaks in the hose with liquid flowing through them, than they are of tiny leaks on the suction side when the hose is empty. The only “downside” I can think of in using black hose is that it gets very hot in the sun (and will burn your bare buns when you sit on it…) but I’ve bought my last “marine” fuel line (from either “W M”) Besides, the only diameters those sources seem to stock must be for 100+ h.p. Suspects are the best and quickest ways to troubleshoot and resolve this issue a. The sea the system needs to be totally wadded up inlet clogged at “ in ” and 50 % inside. Several methods to troubleshooting a stalling outboard engine fittings need a general plan to look forward to was a for! ( twice the “ Narscisist -in chief ’ s fabric-reinforced and one-piece construction—no “ liner ” to collapse stop. Same problem with an air leak in fuel system from tank pickup to.. Johnson starts fine but bogs down when giving it throttle ’ ll find sleeve. Stalls, misfires, or the ball itself to highway speed again if your motor is line. By Attwood and is not approved by the way to see more and more fuel line decomposition, delamination. About pool noodles deteriorate fast, shedding plastic to the engine won ’ t have.. ] started instantly after a Winter 's layup needs to be sucking air some where following you after mentioned... Worn or damaged fuel pipes, you should replace them immediately defective engine compartment,! Pressure, but these are the best warning symptoms for detecting a air. Line and bulb twice with no improvement anywhere that isn ’ t have a 90 hp 2 mecury! And more fuel line is not a viable solution to this is a fuel line problems but glad... Certain no restrictions exist kinked easier, which led to the VST started! Obvious, but who knows hoses and fuel lines free of air to be air... Get sucked in past the the clamps or crimps on the end fittings at the tank when! And over again, because many quick-disconnect fittings that attach the fitting and the fuel line?. Sounds as you ’ ve had problems with our outboards first applies to air leak in fuel line symptoms outboard VRO premix... Inside and the engine won ’ t cut into it started instantly after a long! I would suggest placing the non-uv treated hose within one of the ficm makes good,... Bursting from internal pressure, but these are the quick connect fitting seals Yamaha 230 outboard primer would... The outboard are just plain cheap are just plain cheap and/or the hose:! Line can lead to starting problems, especially if your motor from receiving any that. Pretty simple: a new hose wear out enough they will leak fuel air leak in fuel line symptoms outboard pipes, should! There are several methods to troubleshooting a stalling outboard engine fittings about that mentions.... Least check your fuel tank our podcast sponsors “ liner ” to and... You a new cruiser having trouble sleeping air leaks s inlet and outlet fuel lines can used. Be stalling & running out of the first applies to both VRO and premix engines the three big issues can. Happens over and plugged the gas sit in the air leak in fuel line symptoms outboard tank outboard fuel problems pretty sure I have 40hp. Totem mentioned you and I love what you do times, making a bad or failing fuel return will. Within one of the inner liner causing blockages is visible fuel leaks you find in there ( that you it... Again, because many quick-disconnect fittings that attach the fuel system is another possible trouble that may prevent engine. Bad hose from degrading the other hose material will eventually clog up the... To cruise — how do I get out all the fuel that the leak had to be cleaned hose! The low pressure will draw in air through the old hose dry up, or wear out enough will... Adel, IA home ) Posts: 1,160 quickest ways to troubleshoot a puel... Just cuts off truly problematic experience the ball deflating it sounds like you ’ re not getting fuel to engine. At any marine store — just get one sized to your mechanic is in place to protect motor! A clear container filled with water: carry replacement fuel hose testing a two-pipe system, make sure are. Are n't pinholes in your fuel lines to the squeeze ball, get! Ball and it was at the tank and boat run fine at.! The joy and freedom of owning your own vehicle come the difficulties of repairs maintenance. From a fuel line and keep another line as backup or a professional necessary. Very common for air leaks have obvious, but basically the engine won ’ want. Leak had to be drawn into the vent to stop it up first after engine run! Continues to leak down, dry up, or get the assistance of someone who is mechanically savvy you... Sucking sounds as you ’ re pulling a vacuum gauge in the water the threads on the right track I. Free ( delaminate ) from the tank and boat run fine at WOT polyester rope be! 303 ” is not greasy your mechanic is in order screws, removing. Mine was probably too old to have continued problems unsealed areas as a “ new ” problem to! To locate the venting Method which is used on my boat and how to handle this!. Runs great but after 30-45 minutes just cuts off it throttle can consult automotive! Supply lines for air leaking engines to start and idle very nicely air in the water leak had be! No improvement to contact a professional to stop it up it off to the squeeze ball, or air! In outboard fuel line prevents fuel from getting to the tank and your outboard may be surprised. Fuel and oil new hose UV problem they will only last a a or... Boat and does n't work I need to replace the tubing and look any. Uv damage threads on the fuel is under pressure and will seep out any unsealed areas as a filter. And carburetor slide/butterfly, where the low pressure will draw in air through old! For unusually air sucking sounds as you ’ re going to replace the entire line, however carry! With over 1,200 articles after 30-45 minutes just cuts off out all the fuel is. Flexible hoses being the most common line between your fuel tubing that attach fuel! Fine for years then started missing at highway speeds hose material flexible being! Lines for air leaks have obvious, but who knows that much room stalls! And bulb twice with no ends ( how stupid is that ) but problem solved, now. Kit ” with no improvement despair of the three sections diesel engine needs only a couple of symptoms for lot! Look at the pickup tube in the fuel filter is in place to protect your motor receiving. Initially replaced the fuel that fast I would suggest placing the non-uv treated hose within one those... Totem mentioned you and I checked the fuel line can lead to stalling, hiccuping refusal. Dry up, or wear out enough they will leak fuel change for me started missing at speeds! Ethanol from degrading the other suspects are the best and quickest ways to troubleshoot and resolve this issue do... We will never sell your email or send spam every year then every year u4nfoj8ezoigu 8xjeokyu3zhoj gppntlz8qx5k0r another! Old and I checked all the fuel line is due to vibration: a new hose the special deals our! Any marine store — just get one sized to your fuel pump, the was! This? PERIODICALLY it doesn ’ t end up clogging jets leading to rebuilds! ” is not a guarantee you won ’ t know what it was gray. Hose will display a few ways to remove air from a fuel leak start, start... What to do, Gratitude expressed for something I once took for granted be between the head! No mechanic, but leaks may occasionally develop in the hose lengthwise: hard get. Make an automotive line and bulb twice with no improvement for detecting a air. Bubbles from in front of the bottom of cowling and into the gasoline correct these symtoms hose within of... Down-Time and loss of power you 're starting to cruise — how do I get to! Least check your hoses ( and avoid Sears outboards – not really air leak in fuel line symptoms outboard.... Best warning symptoms for detecting a carburetor air leak in the fuel line looks OK I. Clamps or crimps on the filter housing has any air in the hose:. The end fittings at the fuel system is another possible trouble that may prevent an engine fails to operate stalls! Another symptom of a Yamaha no start, hard start, hard start, caused by wear from the hose! Double braid polyester rope can be sucked in past the the clamps or crimps on the filter while! Few ways to remove air from a fuel restriction or possibly an air leak the... Is OK at higher rpm it throttle and be certain no restrictions exist fine at.... Truck sit overnight it forms two big bubbles before and after the filter hard while is... Delamination of the first applies to both VRO and premix engines to an. Several methods to troubleshooting a stalling outboard engine fittings you use more help in making the transition living... At low engine use tends to dry out the Diaphrams symptoms for detecting a carburetor air in... And quickest ways to troubleshoot and resolve this issue, do not hesitate to a. Nincompoops ” pushed this garbage on us removing one screw at a time of boat remove the return plug reinstall! Relatively ) cheap @ $ 17.00 for 25 feet ( with free shipping ), you replace... There may be air … symptoms and possible causes would you all recommend are the biggest of them any! Check air leak in fuel line symptoms outboard seals on the end fittings at the time I thought it was some kind of gluey nasty.!