Ok guys I have got a holley 4010 (I know I know get a new one ) that I just re built and the thing runs great nice smooth idle great acceleration everything is as I hoped, with the exception of the fact that no matter what I do I can not get this thing to stop running rich I have done everything I can think of but it just wont stop running rich and I am hoping someone on here might have an idea on what I should look at next.

Thanks ahead of time
Chilli

 

When is it rich? When cold? Only at idle? Only under power? Only under cruise?

Have you rejetted it?

 

re built re jetted, to tell you the truth I notice it most on start up occasionally it will puff smoke when I first accelerate it does not seem to run rich all the time and I seem to notice it most when its cold.

 

You might be slightly over-choked.

I forget if the 4010 has replaceable squirters. If it does, go down a step.