454 IB loosing power

mtroy

Recruit
Joined
Oct 18, 2004
Messages
4
RE: 454 Mercruiser 330 HP, 1990
Gents,
My port engine falls off when getting on a plane. I have to move that throttle up about 30% more to keep up with the starboard engine. The secondaries are open and it uses fuel like crazy. In feels like the engine timing isn't advancing. I'm going to put a timing light on it tonight after work to confirm that. If it's not advancing what are my options? It doesn't advance with vacuum so it must be electronic. Any ideas guys? Some info:

1) Full tune up 3-years ago. (I only put about 20-hours a year on the boat)
2) Fuel filters changed
3) Adding Startron to fuel for stabilization
4) Just had carb rebuilt

Thanks for the help guys!
 

Haut Medoc

Supreme Mariner
Joined
Jun 29, 2004
Messages
10,645
Re: 454 IB loosing power

Points or no points?....:confused:
Some dist. have mechanical advance weights that get stuck from rust......;)
 

mtroy

Recruit
Joined
Oct 18, 2004
Messages
4
Re: 454 IB loosing power

Thanks Haut,
No points. I need to check for weights. I thought electronic ignitions advanced spark "electronically".
 
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