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  1. J

    Starter spinning but intermittently turning engine

    1992 mercruiser 5.7 350. When I turn the key I can hear the starter running, almost a slight grind but mostly just sounds like it's free spinning. The engine will VERY slowly turn over then stop for a second or 2 then turn slowly again. Mabe a 1/4 turn at the pullys after 5 seconds. Battery is...
  2. J

    Looking for service manual

    I am looking for a service manual for my 1992 mercruiser 350 5.7 . I can not read the SN so I'm not sure what manual I need. Can someone point me in the right direction?
  3. J

    04 Yamaha f150 misfiring?

    I have been battling this problem for some time now. my port side motor struggles to get above 30k rpm at wot, it shakes the entire boat. if i pump the throttle it will get up to around 35k but immediately fall back to 28-30k. here are some things I have tried. compression is good, all 4...
  4. J

    f150 misfiring. have tried everything i can think of. HELP!!!!

    I have twin Yamaha 04 F150s, the port side just started acting up (shaking and not preforming like the other engine). after a long series of test we determined cylinder 4 is not firing. replaced the spark plug, even though it seemed to be sparking just fine, didn't help, and compressions are all...
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