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Old 07-30-2013, 04:38 PM
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JimN JimN is offline
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Originally Posted by Ski-me View Post
It's a EFI, Mercury Scorpion 330HP engine. I think that's sequential injection, not TBI if I recall.

I'll check with her on the fuel pump turning on with key before start-up.

Nothing major on engine other than a few minor tune-up parts (plug, cap, rotor, fuel filter). However he did install a new alternator and possibly a new grounding wire......however, it was still behaving this way prior to his repairs.
Someone needs to verify fuel pressure and quality, as well as spark, when it won't start. I have seen ground wires that were loose/broken and when the engine compartment temperature was high, the wires relaxed, breaking contact with the block and when it cooled, it was fine. Could be a connector that's doing the same thing.
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