What Are The Symptoms of An Air Leak? 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. We knew that the leak had to be somewhere between the tank and the fuel pump. A vapor lock induced … Funny, I think of ethanol as a “new” problem. Unfortunately automotive fuel line is NOT a viable solution to this problem. The fuel had pressurized in the tank in the sun (no vent on that tank) and when I turned the handle to steer, the crack finally opened. Starving for fuel. with a bad old hose from the 80s. 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. 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. 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. Check out all the special deals from our podcast sponsors! . But dies off at full throttle. Started following you after Totem mentioned you and I love what you do. 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. 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">. 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. Do I need to wrap the threads on the tank fitting when replacing? This could result in fuel starvation at high throttle settings. • Tips from Carolyn ... you have blockage somewhere in the fuel line from the bulb to the fuiel ... July 17, 2006 at 11:47 am #460982. No wonder fuel couldn’t get through! 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. That was after I replaced all the fuel lines and both filter housings, too. Fix of a Yamaha no start, hard start, caused by bad fuel connector and bad hose. 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. a a season or two tops, like there Stanley tools. This is a great blog. The hydrophilic properties of ethanol (any alcohol) draws water right out of the water that builds up in the bottom of the tank and contributes to corrosion of the jets and other parts of the carb. Air in the fuel system is another possible trouble that may prevent an engine from starting. Would drip out of the bottom of cowling and into the rear of boat. What causes vapour and air leaks? When this happened to us recently, the solution was pretty simple: a new hose. REMINDER: If you are testing a two-pipe system, make sure you remove the return plug and reinstall the return line. A quick Google search shows these fuel lines were made in response to the ethanol mandate in 2005, and have been on the market since at least 2007. 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. Remove the screws and place the tubing above and below each screw. Been told it could be a bleed line … Buy marine certified fuel hoses. The fuel line, bulb, etc., are only a year old and I checked all the clamp/connections. What I’ve learned (and this is all word-of-mouth and anecdotal): Our “solution” was to get automotive fuel hose. It also kinked easier, which led to the engine dying at the most inopportune times, making a bad situation even worse. Phase separation leaves globs of ethanol in the fuel that the engine cannot run on. 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. Some of those little pieces can end up clogging jets leading to carb rebuilds. Once you have removed the tubing, clean it well and place it in a clear container filled with water. Put it back in, and the same symptoms. Symptoms and Possible Causes. 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. ... test the line for leaks and be certain no restrictions exist. We’ve had problems with two hoses in the past three years. Yes I think a carburetor kit my rectify your fuel leak problem, there are four possible reasons why the carb is leaking. In order to run properly, diesels need huge amounts of ambient The hoses with the grey outside coating (UV protection) seem to have more problems than others. Started first after engine was run then tilted forward for towing. A leaky fuel line will produce either drips, or in more serious cases puddles of fuel underneath the vehicle. 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