1999 mercruiser 350 engine no horsepower

charbon1171

Recruit
Joined
Apr 11, 2009
Messages
2
I have a 1999 Chaparral 260 with a fuel injected 350 mag. The boat had been running fine then we filled up at a dock we do not usually fill up at. The boat starts fine but, now when we take off it is under powered and I can only get it up to 3000 rpms. We changed the fuel filter now I am wondering if it is the fuel pump. Anyone know what the fuel pressure should be I'm going to test the pressure from the fuel pump.

This happened the last two times we took the boat out but, after 10-15 minutes it was like someone flipped a switch and the boat took off. The last time we took it out the boat just stayed under powered.

Any thoughts aor suggestions would be appreciated.
 

lostcause245

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Joined
Sep 7, 2010
Messages
1
Re: 1999 mercruiser 350 engine no horsepower

Sounds like at your last fill up you got some bad gas, possibly with water in it. Change water separator and keep a spare aboard.
 
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