Mercruise alpha 1 fuel prob

9

94crownline210ccr

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Jun 11, 2011
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New to the site and haven't done a search yet. Problem I'm having is my crown will start an idle fine but when you hammer down on it it goes to 3000rpm and Boggs down. I'm thinking it is a fuel supply problem either with a weak fuel pump or maybe the accelerator pump. Boat sat all last year while my wife was preggo so I drained all the old fuel, cleaned the carb and installed a new fuel/water filter. Boat is a 210ccr w/a 350mag. Any help would be appreciated, thx.
 
gustro

gustro

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Nov 30, 2010
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Re: Mercruise alpha 1 fuel prob

You couled have up to three fuel filters in that system. My 4.3 V6 Mercruiser has a canaster fuel/water seperator that I installed plus the factory fuel pump filter, as well as the screen in the carb body. What usually caused the same problem for me was the screen in the carb body. Not a whole lot of time and effort to replace all filters. Good luck.
 
Bondo

Bondo

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71,478
Re: Mercruise alpha 1 fuel prob

I'm thinking it is a fuel supply problem either with a weak fuel pump or maybe the accelerator pump.
Click to expand...

Ayuh,... Probably need to Rebuild the carb...
It sounds like the accelerator pump is workin' right though...
 
9

94crownline210ccr

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Jun 11, 2011
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Re: Mercruise alpha 1 fuel prob

I forgot to add that you can rev the motor to 5200-5500 w/o it engaged but it wont rev like that under a load or should I say power the boat while in the water.
 
Bondo

Bondo

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Re: Mercruise alpha 1 fuel prob

94crownline210ccr said:
I forgot to add that you can rev the motor to 5200-5500 w/o it engaged but it wont rev like that under a load or should I say power the boat while in the water.
Click to expand...

Ayuh,... Irrelevant....

A V8 will rev to the Moon when only runnin' on 4 cylinders, without a Load...
 
gustro

gustro

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Messages
21
Re: Mercruise alpha 1 fuel prob

94crownline210ccr said:
I forgot to add that you can rev the motor to 5200-5500 w/o it engaged but it wont rev like that under a load or should I say power the boat while in the water.
Click to expand...

This sounds all too familiar. Ran rpm up in no load adn died under load. Always went back to the mesh filter in the carb body.
 
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