Carburetor switch

[djc4868]

I have a 86 3.0 that the carburetor is not working properly but I have a 1970 mercruiser 6 cyl carburetor that is in good working order it is a 2 jet will it work on the 3.0?

 

[Bondo]

Ayuh,...... Welcome Aboard,....... It might, or might not,.....
Why not just rebuild the carb that's on it,.....

 

[Scott06]

yeah usually although they are he same carb things like the venturi cluster primary jets and power valve are different sizes for different engines... so it might work or may not work well at all.

One other potential hiccup willing to bet the choke on the 1970 carb is heated off the exhaust vs the 86 having and electric choke .

Rebuilding a carb is not hard folks here can walk you through it.

 

[Scott Danforth]

I vote for spending the under $50 on a carb kit and cleaner and rebuilding the correct one.

 

[djc4868]

Ayuh,...... Welcome Aboard,....... It might, or might not,.....
Why not just rebuild the carb that's on it,.....

It’s already been rebuilt must have been a crappy job

 

[flashback]

What makes you think the carb is at fault?

 

[djc4868]

What makes you think the carb is at fault?

It runs extremely rough cannot make any adjustments to it nothing seems to work

 

[Bondo]

It runs extremely rough cannot make any adjustments to it nothing seems to work

Ayuh,...... Have you cleaned, 'n rebuilt it,..??

 

[flashback]

sounds like it may need rebuilding a second time.

 

[Scott Danforth]

It’s already been rebuilt must have been a crappy job

It runs extremely rough cannot make any adjustments to it nothing seems to work

How was it rebuilt?
Was a piece of fishing line pushed thru all the passages to make sure they were clear?
have you verified that the points are set correctly? 30-32 degrees of dwell and 4 degrees BTDC timing?
have you checked compression?

 

[charliedaubitz1]

It runs extremely rough cannot make any adjustments to it nothing seems to work

check for vacuum leaks. on the manifold and the carb base gasket, use a spray bottle with water.