carcrafter22
New member
- Joined
- Oct 24, 2007
- Messages
- 1,139
Ok I have been trying to get my project truck running after 4 long months but one thing has been killing me, air in the lines.
I have tightened retightened and then tightend all the fittings again. I have been over everything 10 times or more and I cant find anymore leaks.
I did have very small leaks on 3 injector lines that I fixed by really cranking down on the lines, and the fuel filter base I was using has some leaks so I went to a steel unit with only 2 fittings in it and used a fuel specific sealant they use on airplane fuel tanks to seal the fittings for a leak proof setup. I cant find anymore leaks at all.
the thing is that after I bleed all the lines of air the truck fires up and runs great for about 15-20 seconds, I installed a pressure gauge and at idle the pressure shoots up to about 40psi for 10 seconds then goes to 0 psi which leads me to believe that my lift pump is not able to keep up and starts to pump air into the system. What do you guys think?
the lift pump I am running is a temp unit until I can get an Aeromotive a1000.
The pump I have now is a mallory comp 250 thats rated at 250gph free flow 230gph @6psi
My thinking is that the pump may be hardly flowing anything at 50psi causing my engine to run fine for a few seconds then stall and die after losing pressure.
Please let me know what you guys think.
I have tightened retightened and then tightend all the fittings again. I have been over everything 10 times or more and I cant find anymore leaks.
I did have very small leaks on 3 injector lines that I fixed by really cranking down on the lines, and the fuel filter base I was using has some leaks so I went to a steel unit with only 2 fittings in it and used a fuel specific sealant they use on airplane fuel tanks to seal the fittings for a leak proof setup. I cant find anymore leaks at all.
the thing is that after I bleed all the lines of air the truck fires up and runs great for about 15-20 seconds, I installed a pressure gauge and at idle the pressure shoots up to about 40psi for 10 seconds then goes to 0 psi which leads me to believe that my lift pump is not able to keep up and starts to pump air into the system. What do you guys think?
the lift pump I am running is a temp unit until I can get an Aeromotive a1000.
The pump I have now is a mallory comp 250 thats rated at 250gph free flow 230gph @6psi
My thinking is that the pump may be hardly flowing anything at 50psi causing my engine to run fine for a few seconds then stall and die after losing pressure.
Please let me know what you guys think.
