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Re: Mercruiser Engine Problem
As other's have already mentioned here, my first guess would be a weak fuel pump. Hook up a fuel pressure gauge and take it out so you can see what it is reading under a load. I recently had the same problem. Fuel pressure was 40+ PSI at idle and dropped down to about 17 PSI as I started to plane the boat out. Good luck! I agree that the IAC would be a very unlikely culprit, but stranger things have happened!! Also, check the fuel line from the tank to the fuel filter housing and make sure it has not developed a soft spot and is collapsing under load.
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Re: Mercruiser Engine Problem
My uncle had this problem 2 years ago, the Merc mechanic went through everything in the end it turned out to be plug wires. I'm still at a loss but the bad wires seemed to mess up the computer.
Last year the other motor started surging at idle, still haven't fixed that one. If it were me I would be taking the advice the board has given and start swapping components from one motor to the other. |
Re: Mercruiser Engine Problem
Originally Posted by GOODT
ok here we go first its not my boat read the post....
second, I dont survey boats I fix them.... third..... i THINK first before I tell someone something.... fourth.... after 25 yrs I think ive proboly been doing this longer then you.... if I wanted to be mean and dis you I would of told you to eat s*it and die I have certs from merc, omc and volvo and you...??????? oh and no im not a hot shot just 42 yrs old been doing hp boats for a long time and no im not always right just not wrong often and dont like being put down when im not wrong if i am then go for it.. if your not 100% sure when you say something then say I think the iac only controls idle. dont mke it sound like you know 100% that im wrong when im not!!!!!!!! I take alot of pride in my work and try not to be wrong I dont survey boats you do do you want me to say more |
Re: Mercruiser Engine Problem
i had nothing to do with this thread... do i still get in trouble???
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Re: Mercruiser Engine Problem
Originally Posted by stecz20
i had nothing to do with this thread... do i still get in trouble???
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Re: Mercruiser Engine Problem
no this time its just me
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Re: Mercruiser Engine Problem
[QUOTE=Edward R. Cozzi] YOU MIGHT AS WELL HAVE SUGGESTED HE TEST THE WINDSHIELD WIPER SWITCH!
QUOTE] Funny You should say that......... It's a long story that I'll have to tell you sometime :D |
Re: Mercruiser Engine Problem
stecz did it again
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Re: Mercruiser Engine Problem
[QUOTE=CAP071]
Originally Posted by Edward R. Cozzi
YOU MIGHT AS WELL HAVE SUGGESTED HE TEST THE WINDSHIELD WIPER SWITCH!
QUOTE] Funny You should say that......... It's a long story that I'll have to tell you sometime :D |
Re: Mercruiser Engine Problem
Originally Posted by GOODT
no this time its just me
you bad apple you........ |
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