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Replaced ql78 yc plugs after what seem to be rough idle. The rpm gauge was bouncing between 800 to 1000 rpm. After 5 minutes of ilde shut down and removed the plugs to find them once again soaking wet with fuel. Shouldn't they have been dry? Getting ready to go off shore and suspect a problem . Any suggestions will be appreciated.
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thanks for all the replys, they were overwelming -
Don't know what you mean by "soaking wet". Are they dripping gasoline when you take them out? Is the motor idling good with the new plugs? Damp looking plugs are normal in a 2-stroke engine, especially after an idle. They won't look as dry as automobile plugs. If the motor was running good, then the plugs are not drowning.Comment
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wet with gas, almost dripping! Local mech. Said i had a bad fuel pump; that cost the crap of me! Engine running rough at idle. After replacing the fuel pump he had to richen up the carbs becaues it would'nt idle in the water. He said now the carbs need rebuilding, because the plugs are still very wet and idle is still rough!Comment
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Never heard of a bad fuel pump pumping too much fuel. They usually get weak. I would think the needle and seats would prevent that - unless the fuel/oil pump is failing on the gas side and therefore the oil side of the pump is providing the engine with too much oil. That can happen. But, if he replaced the pump that problem should be gone.
And it is already soaking the plugs but he had to richen it even more??! Interesting. But, your local guy can see your motor; I cannot, so I will not second guess him.
Either you have faith in your mechanic, or you don't...... your choice.Comment
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No faith! I picked up my boat and took it to another shop. They will do some testing and let me know the first of the week; let you know the out come! My next step maybe buying a service manual and get started... scary thought!Comment
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I hate to say it but switching mechanics sounds like a pretty good move in this case. Yes, by all means, let us know the outcome. We all learn from each other.....
These 60-degree "Eagle" series motors are good ones! I have a '98 115; as trouble free a motor as I have ever owned. They are a mite tricky for the shade-tree mechanic as far as power pack swaping requiring new timing - and the optical igniton sensor (It must be shaded to operate correctly). But, other than that, they are pretty much right down the line. Lots of punch and a great horsepower to weight ratio.Comment
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had the same problem with my 250,was bad gas.would run in 4stroke not 2.run a hose in small tank with new gas and try it sure worked for me.gave away 130 gallons of bad gas that ran in a older blazer.Comment
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Good call almosthere. Also, fuel pump diaphram could be going bad from modern gas.Comment
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