Trouble accelerating

[Captain3]

A 4.3 Mercruiser, 1990 boat. It bogs out when accelerating unless the choke blade is almost completely closed. I did get some dirt out of the fuel filter, yet still the same problem. Would rebuilding the carb help? I just thought once the engine was warm the choke should be open? Very frustrating, any ideas???

 

[Scott Danforth]

pull the carb, pull it apart.

you have crud in the accelerator pump circuit - the dirt that bypasses your filter as well as the cruddy fuel that evaporates and leave sludge behind.

so yes, a carb rebuild will help.

 

[Bondo]

I just thought once the engine was warm the choke should be open?

Ayuh,..... It should,..... Rebuild the choke while yer rebuildin' the carb,.....

 

[Captain3]

Okay, great. Do I need a carb rebuild kit specifically for that carb or can I get by with just carefully taking everything apart and cleaning well and putting back together with the old gaskets, etc.?

 

[nola mike]

You might be able to get away with it, or you might be tearing it apart again.