Jeepen
Cadet
- Joined
- Sep 20, 2018
- Messages
- 15
VP 5.7 320 GXI MPI duo prop
compression test 150 PSI on all 8 cylinders
New fuel pump assembly & filter with low side reading 10 psi High 55psi
plugs, wires, cap and rotor look great less that 20 hours on them
new fuel regulator with new style clip no screen but when replaced the screen was clean no debree.
Engine starts and idles great. when you engage drive and give it any throttle it starts popping, knocking and backfire and has no power. The thing that is weird if you don't engage drive and rev up engine it sounds great, revs up fine sounds like it has tons of power but as soon as you engage drive under load it sounds terrible. Very frustrated please help?
compression test 150 PSI on all 8 cylinders
New fuel pump assembly & filter with low side reading 10 psi High 55psi
plugs, wires, cap and rotor look great less that 20 hours on them
new fuel regulator with new style clip no screen but when replaced the screen was clean no debree.
Engine starts and idles great. when you engage drive and give it any throttle it starts popping, knocking and backfire and has no power. The thing that is weird if you don't engage drive and rev up engine it sounds great, revs up fine sounds like it has tons of power but as soon as you engage drive under load it sounds terrible. Very frustrated please help?