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    Yamaha s250turu v76 trim button activates electric fuel pump??

    This engine is mechanically sound,compression all good, It runs rough at all speeds and sometimes stall at idle. Timing at idle is sometimes 2-4 btdc and other times 2-4 atdc and others 7btdc. It doesnt jump around while running. It seems to change randomly when shut off and restarted as does...
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    Yamaha 1997 v76 s250 tech help needed

    This engine starts right up but runs rough at idle and no power, I have been diagnosing intermittent random loss of spark. I attached digital timing light to #1 and get steady 2* BTDC at idle, It then may lose spark to #1 so move timing lead to #2 and have spark working there as well as #4 and 6...
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    alpha one shift problem.

    model is alpha one 1.5 to 1 mated to 5.7 on 1986 260 wellcraft. The work done so far is new shift cables complete kit installed. That is both the command to "plate" and lower shift cable kit installed from "shift plate" to o/d. I have installed at least 50+ mercruiser lower shift cables. This is...
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    whats a fair price for 28 ft bertram flybridge 1973 or 76 twin gas 350cids mercruiser

    Im looking at a new boat. 28 ft bertram flybridge. int is mint, hull mint, motors are tight and clean, repower5 years ago, gas tanks and hoses all refitted for new ethanol fuel. canvasas great. 2 mercruiser 350 cid,only a helm uptop I'm going this weekend to see the boat in person. All Im asking...
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    470 mercruiser help,blowing air out valve cover

    :confused:I just baught this motor from a guy,complete engine ready to plug in and go.i thaught. It starts and runs perfect except it blows huge amounts of air out the valve cover.I ran it yesterday for 10 mins and then blue smoke out the exhaust.The smoke stopped after 5mins of 2k rpm...
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    will can electric fuel pump work sometimes? cool fuel

    My 2001 wellcraft with mercruiser 350 tbi sprays fuel from tb injectors for 30 seconds or 2 hrs or not at all??? This problem started weeks ago.Boat would run perf for hrs then up and die,wait hrs and would start,go slower and would take longer to die. It now starts for 30seconds or 1 min or not...
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    96 yamaha 225 alarm horn at low speed,not high rpm

    Hi all this motor has a strong stream of water comming out back and oil in tank. what are the only reasons for alarms?low oil,overheating, and? low voltage?I think I read that in another post. Besides elect malfunctions. thanks
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    mariner 60hp 2 cyl 2 carbs, vacum hose fitting behind carbs

    Hi all,My question is simple if you have seen this engine correctly assembled.there is a fitting for a 1/8 or so vacum line behind each carb,located on the left side of the spacer plate between carb and intake.On the lower carb the fitting has a small hose attached and it goes to the base of the...
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    1994 120hp johnson o/b no power/rpms under load??

    Hi All, I am a pretty good mechanic and hope I can help out some of you guys. I have a buds engine that has 140psi in al 4 cyls,runs smooth at idle,will scream up when no load on it. Hit the water and push throttle up and it's like you aren't moving the throttle. It is openning the carbs and...
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