Engine puttering out when backing up?

LoudDog

Seaman
Joined
Jun 2, 2007
Messages
63
96 regal, 5.7L mercruiser, alpha 1...

I backed up a very long distance, maybe 100 feet or so, today at the dock. Afterwards, while going forward the engine was sputering under load, was not right, and a decent amount of fairly dark gray smoke. I got it back to the dock just as it died maybe 30 seconds after I was done backing up.

It acted as if it was flooded when I tried to re-start, but it started up pretty easy. It sputtered for a few seconds but then ran fine? I let it run a bit, shut it off and re-started, no problems at all? We went out, had a great day, ran perfect, no problem.

Could water have gotten up into the exhaust as I was backing up? Or maybe the exhaust got too backed up restricting airflow? I wasn't going that fast (no wake zone).

It's never done this before and I've never backed up that far before so i think the issue may be linked to the backing up? Am I just not suppose to back up that far? That is the only thing I did differently?

Thanks for any thoughts/suggestions.
 

jtybt

Senior Chief Petty Officer
Joined
Aug 5, 2009
Messages
730
Re: Engine puttering out when backing up?

Probably could use a complete trune-up and carb adjustment. Also pull plugs and read them.
 

freeone

Petty Officer 2nd Class
Joined
Aug 10, 2007
Messages
104
Re: Engine puttering out when backing up?

thats pretty far. water wouldnt have mede it up to the manifolds unless your shutters are shot.
 

airdvr1227

Lieutenant Commander
Joined
Jul 15, 2009
Messages
1,666
Re: Engine puttering out when backing up?

My rig will do that if I run for extended periods at idle. When was the last time it had a complete tune-up? I just did mine and it still loads up at idle. I'm replacing the carb this winter with a reman.
 

Apollo75

Petty Officer 1st Class
Joined
Sep 2, 2009
Messages
272
Re: Engine puttering out when backing up?

The black smoke says it is more of a fuel issue --- maybe the choke is a little off or you backed up without letting the engine warm a little. There is a lot of load on the engine when engaged even at idle and this load can slow the engine rpms when cold causing a rich mixture.

OFM
 

LoudDog

Seaman
Joined
Jun 2, 2007
Messages
63
Re: Engine puttering out when backing up?

Figured out and fixed the problem. The choke was sticking closed! Doh!
 
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