Hi All,
I have a 1971 Charger with a mild 440 (about 400 hp). It has a Carter Street/Strip mechanical pump and a Holley 750 DP.
It started running poorly and I noticed it had 3 psi fuel pressure. I blew out the line to the tank with air and made sure the fuel filter was not plugged, fired it back up and had 9 psi.
Then I took a 0.67 mile, 25 mph trip around the block and had 7.5 psi when I got back.
Then I took a 2 mile, up to 55 mph trip around the bigger block, and when I got back I had 6 psi that dropped pretty quickly back down 3 psi as it idled, basically where I started. Not even enough pressure to fill the fuel bowls.
My first instinct was a pump problem, but now I am not so sure that is the case, but I am not sure what else it might be.
Any thoughts or ideas?
Thank you.
Greg