[87 monte ss]

ok, normally my edelbrock pumps 9 psi of fuel to my edelbrock 750 carb, but now every once in a while it has a bog at WOT and the fuel pressure drops to 5 psi, also normally my fuel filter is completely full of fuel while running but again every once in a while its barely full. So im wondering if anyone can tell what the problem is. Oh btw its a 350, and the carb was tuned using a vacuum guage. Thanks in advance for any info.

 

[x007]

First you have to run at 5-6 psi not more....

The bug you have at WOT is may be because of the step-UP spring.. You may have to try other spring edeb. sell a kit for that.

If you have a pressure drop, only way to fix this,
build a return line to the tank...