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Opinion seems to lean away from electrical and towards mechanical.
However,the port engine had run satisfactorily, 6 hours earlier, re-started and appeared to be idling normal. Simultaneous with starting the center engine (creating current draw) the then idling port engine experienced an explosion. There is nothing to indicate a burned piston or other mechanical failure....Though some definite volume of fuel was in the crankcase,that was mechanical. |
Originally Posted by CcanDo
(Post 2573258)
Opinion seems to lean away from electrical and towards mechanical.
However,the port engine had run satisfactorily, 6 hours earlier, re-started and appeared to be idling normal. Simultaneous with starting the center engine (creating current draw) the then idling port engine experienced an explosion. There is nothing to indicate a burned piston or other mechanical failure....Though some definite volume of fuel was in the crankcase,that was mechanical. |
Merc computers don't like to run in ALL position. On my boat it will break down at about 3000 rpms if the switches are set to ALL. If he is running carbs it might not be an issue, but it is still better to run a sep battery for each engine.
Originally Posted by Strip Poker 388
(Post 2572740)
set to all doesn't sound right to me?? my Hustler paper work says don't run in the all position
don't think that related though |
Originally Posted by MacGyver
(Post 2573119)
One thing I see...you need terminal covers on the right battery in your picture. Easy way to get a ticket.
I cant find any that fit them right |
Do a compression check or leak down. You will find the cylinder with the problem. I am betting leakdown will show one blowing into the crankcase big time.
When you were running you may have had motor in detonation. The piston got fractured but did not let go until you had the engine running again. |
Appreciate the input. Im hoping to get a compression test done tonight before I leave for a 4 day weekend. If I do, I'll post the results. If not I'll be doing it next Tuesday evening. Thanks.
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OK...here's the compression test results:
Cylinder - PSI 1 - 104 2 - 105 3 - 106 4 - 109 5 - 110 6 - 111 7 - 111 8 - 110 No appearant mechanical failure... |
Originally Posted by grand-illusion
(Post 2574190)
OK...here's the compression test results:
Cylinder - PSI 1 - 104 2 - 105 3 - 106 4 - 109 5 - 110 6 - 111 7 - 111 8 - 110 No appearant mechanical failure... |
Put the valve covers back on and see if it will blow the supercharger off the top of the engine next time. :evilb:
Just kidding. Hope you find the problem. I am out of suggestions. My theory is that if you fix the fuel problem, the rest won't matter. :cool-smiley-011: |
nevermind
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