Engine Hesitation


Old 10-01-02, 09:29 AM
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Question Mercruiser 140hp i/o lags when giving gas

I have a 1986 Searay Seville with a Mercruiser 140hp I/O. The motor runs like a charm except when first starting. When I first give it hard gas (out of the "No Wake" zone), it delays, then kicks in....or it stalls. It only happens when giving it a hard throttle. Any ideas? Thanks...
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Old 10-05-02, 04:29 PM
BoatMech's Avatar
Join Date: Dec 1999
Location: Los angeles
Posts: 592
does it do it all day? Everytime you try to accellerate
hard? Could be the timing, or the carb, accell pump.
Old 10-20-02, 12:09 AM
Join Date: Dec 2001
Location: Volusia County, Florida (Central)
Posts: 249
If it is an engine problem:

I would guess you also have a problem of running 1/2 or greater throttle and shutting it down to idle quickly.

I also am guessing you have fuel injection.

Need some adjusting.........

If not, perhaps your fuel is stale or has some water in it, or your fuel filter needs replacing.

Good Luck!

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