mercruiser carb overflowing

W

wroesten

Cadet
Joined
May 10, 2011
Messages
7
I have a 2 barrel mercruiser mercarb i just had it rebuilt...... when i turn the ignition, fuel flows out the top of the carb. any thoughts? Thanks
 
J

jallen100

Seaman Apprentice
Joined
Mar 20, 2011
Messages
37
Re: mercruiser carb overflowing

I had a problem like that on our race car once and it was just a stuck float.
 
Don S

Don S

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Aug 31, 2004
Messages
62,321
Re: mercruiser carb overflowing

wroesten said:
I have a 2 barrel mercruiser mercarb i just had it rebuilt...... when i turn the ignition, fuel flows out the top of the carb. any thoughts? Thanks
Click to expand...

Since an electric fuel pump is not supposed to come on just by turning the key to the run position, means you have 2 problems. Both (at this point) are very dangerous.

Did you by some chance just install an electric fuel pump and now you have this problem?
 
Don S

Don S

Honorary Moderator Emeritus
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62,321
Re: mercruiser carb overflowing

when i turn the ignition, fuel flows out the top of the carb. any thoughts?
Click to expand...

Explain what you mean by "When I turn the ignition". I assumed that meant when you turned the ignition key to the on or run position. Which with a mechanical fuel pump won't do anything.
So does this mean while cranking/starting the engine?
If so, then you have carb problems.

i just had it rebuilt
Click to expand...

Take it back, it's not right.
 
fat fanny

fat fanny

Lieutenant Commander
Joined
Feb 9, 2006
Messages
1,935
Re: mercruiser carb overflowing

Like Don said it's not right! make sure none of your linkages are binding and if so remove the throttle cable and try starting it without the cable attached and see if the issue still occurs.
 
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