Anyone ever experience an intermittent rough idle and stall? It usually only happens once per trip at low speed and takes a few (10) tries to start and then runs fine. Changed the fuel filter but it didn’t make any difference, any input would be appreciated. 350 Marine Power motor.
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Any common factors when it happens or just random? -
I am getting just about the same problems from my 2009 22ve. Replaced Cap, Rotor and plugs. Have not replaced the fuel filter but just ordered one. I was thinking it was the SeaFoam I put in the fuel tank, maybe it loosened some of the junk in the tank and clogged the fuel filter. My problems show up when I start the boat at the launch. It will start up and die shortly after. I will do this dance several times before it runs. Once I get moving past idle it seems to run just fine. I did see a small puff of smoke this last time I started her up.Comment
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Agreed it sounds like IAC valve. Easy to replaceComment
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Agree IAC but I would do ECM/ECU temp sensor also. They are cheep and while you are there. Especially if the boat starts and idiles fine warm.Comment
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Thanks for the help I will give it a tryComment
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So I talked the the rep from marine power and he said this model boat doesn’t have a separate IAC you have to replace the whole throttle body, but he mentioned my problem sounds like vapor lock and to let it cool down a bit before shutting off the motor. Tried this and still the same problem. Checked the fuel cooling system and all is good, has anyone ever had a problem with vapor lock and if so what was the cure?Comment
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When it happens, see if just applying throttle in neutral allows it to start. If so, change the throttle body with this:
https://www.oreillyauto.com/detail/b...tle+Body&pos=1
and this
https://www.oreillyauto.com/detail/b...g+Gasket&pos=0Fixing everyone elses boat just so I can use mine...Comment
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