Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Diagnose a Quadrajet carburetor problem => Topic started by: greencar on July 15, 2010, 05:58:26 PM

Title: Hard Starting when warmed up
Post by: greencar on July 15, 2010, 05:58:26 PM

I have a 350 Chevy with a Quadrajet and a Holly fuel pump, street version. The carb was rebuilt for this engine by Cliff and works very well. I believe my problem to be in fuel delivery. When it warms up it is hard to start, seems like a flooding situation. My question is should I install a pressure regulator and set it for 4 pounds? I am also thinking about a heat shield. There is a metal plate that GM offers or I have seen .5 inch phenolic spacers.  If I'm missing something else feel free to let me know. Also the electric choke seems to be working fine.  Thanks Ed

Title: Re: Hard Starting when warmed up
Post by: 77cruiser on July 15, 2010, 07:35:32 PM

How much pressure do you have?

Title: Re: Hard Starting when warmed up
Post by: greencar on July 16, 2010, 03:58:55 PM

I have 7 pounds of pressure

Title: Re: Hard Starting when warmed up
Post by: 77cruiser on July 19, 2010, 05:03:56 PM

I think it might be a little high.