Carb question

[Quadruplecccc]

I have a marine 2bbl carb on my 233hp mercruiser. I need to know how a power valve works in the carb. thanx

 

[SeanMcl]

Re: Carb question

http://www.chevyhiperformance.com/techarticles/74058_carburetor_valve_problems/index.html

Here is a good explanation. In a nut shell, the power valve opens as manifold vacuum drops to richen the air/fuel mixture.

 

[Quadruplecccc]

Re: Carb question

Thanks! That answered abunch of questions. Gotta go get new P.V.