OK, remember I asked which was muffed, my new Holley mechanical fuel pump, or the new Holley 0-15 psi liquid filled guage? The symptoms are that it shows 8 psi when I first start the car, and it drops to 1.5 PSI when the engine is warmed up.
I finally had a chance to hold the 4150 mechanical secondaries open for a few seconds while smoking the tires up to speed on the freeway on-ramp, and it ran strong and smooth up to 75 mph with an indicated 1.5 psi on the gauge. Dumb question: Could the engine even run if the pressure were really 1.5? Time for a new gauge?
Now if this were my MasterCraft ski boat's fuel injected LT-1, it would be easy to diagnose. I still feel like a dope with carburetors....
http://members.aol.com/kengibbons/auto/index.htm
I finally had a chance to hold the 4150 mechanical secondaries open for a few seconds while smoking the tires up to speed on the freeway on-ramp, and it ran strong and smooth up to 75 mph with an indicated 1.5 psi on the gauge. Dumb question: Could the engine even run if the pressure were really 1.5? Time for a new gauge?
Now if this were my MasterCraft ski boat's fuel injected LT-1, it would be easy to diagnose. I still feel like a dope with carburetors....
http://members.aol.com/kengibbons/auto/index.htm