Engine/Transmission (1994 - 1998) Fuel Pump-big Enough?

[6 WHEELER]

How Much Can The Stock Pump Handle? I Just Got My P7100 Back From The Shop, 4000gsk 191's # 10, Big Injectors! What Do You Guys Recomend? I've Had Good Luck With The Fass On My Other Trucks, But Never Put One On 12 Valve.

 

[Bob4x4]

How Much Can The Stock Pump Handle? I Just Got My P7100 Back From The Shop, 4000gsk 191's # 10, Big Injectors! What Do You Guys Recomend? I've Had Good Luck With The Fass On My Other Trucks, But Never Put One On 12 Valve.

Put a gauge on it,drive it hard and see what you get.



Bob

 

[6 WHEELER]

I Don't Have Even Have The Engine In The Truck Yet. I'm Buying Parts For It Every Day. I Don't Want To Buy Something I Won't Use. What Kind Of Psi Is Good On A 12 Valve?

 

[Joe G.]

Idle pressure should be at least 18 PSI. 2000 RPM should be at least 25 PSI. The stock lift pump will provide plenty of fuel. Mine idles at about 30 PSI. Running down the road is in the high 30s or my 40 PSI gauge is pegged.