GM TBI fuel pressure

BBShark

Garage Monkey
Staff member
Joined
Mar 5, 2008
Messages
4,846
Location
Right here
What is the fuel pressure for the 90's GM TBI in-tank pump modules? I'm looking for 45-55 psi.
 
I have never personally measured a TBI, but have read many times, it's 10 psi.....or so...

DPFI is in the 40 region, IF I block the return hose my pump will go to 60 psi...regulator set at ~40 something 42?
 
Top