Yet another "popping" problem thread...

i am also having the same problem with it poping at higher rpms. I have a 94 that i am doing a frame off resto on and i finally got it running a few weeks ago. i had the engine built by Enterprise Engine Performance and had them oring, new pistons, file fit rings, 60lb springs, bigger cam. pump timing is 16.5* with lee 5x16 sac injectors air dog 200 with a # 10 plate ff and afc ff, 4k gov springs and a borg warner 66/74/14 turbo. the truck starts fine and idles fine but when i get into the higher rpms it doesnt run so well. it starts poping real bad and alot of white smoke. i dont mean to hijack ur thread but im out of options!! :bang
 
Cummins Driver said:
Sorry, I didnt see the part where you said you are getting 40psi. I just googled the pump and it said 15psi was what it put out? It could have been wrong though. I think the stock lift pump is 18-24 psi at idle, 28-36 at 2000 rpm with no load, and can go up some from there with RPM. Regardless, 40psi is plenty as long as you have enough volume.
Click to expand...

You need to get a new google. Yours lied to you! :poke: Here's the pump specs.... Again with a Tork Tek 37-45 psi OFV I get 40 PSI into the pump....

Holley 12-920 - Holley In-Line Electric Fuel Pumps - Overview - SummitRacing.com
 
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