Quote:
Originally Posted by PathfinderNI
Thanks for the suggestions....easiest thing to try first I suppose is to change the fuel bulb....Clampy, when you said fuel line are you talking about the part with the bulb that goes straight to the motor? I don't think it's fuel quality problems....I've been running 93 octane with Yamalube that has the ethanol treatment....I also add Stabil for good measure. I do have a fuel separator.
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I had the exact problem and searched forever. Even drained fuel, put new hoses, changed filters 2 bulbs, and had all but given up. Searched on the internet and read a bunch of stories of several people having the same issue. It seems on some engines especially suzuki and some models of yamaha have this problem after running a while and when you stop and fish for a while the fuel gets hot and causes a vapor lock in the injection system. The easiest way to diagnose this is when you stop dont just kill the motor but let it idle a couple minutes and the engine is cooler when you stop it, and doesnt heat up the fuel as bad.
Also the articles claim ethanol treated (stabil) or not has a lower (boiling) point than real gas. I am not saying this is your problem but if it is you can find out quicker than me! Ethanol free fuel completely cured mine. After countless hours fighting for a cure it was so simple. Suzuki offers a fix for this in the form of a low pressure fuel pump. Hope this helps.