fuel presure
08-17-2010 | 08:39 AM
#1
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From: morehead n.c
fuel presure
i have a 98-2000 7.4l 454mpi i need tol know what the fuel presure is supose to be? Its only has 30psi when it primes when the key is turned and 20-23psi when running.thanks
Last edited by ridefast77; 08-17-2010 at 08:42 AM.
08-17-2010 | 09:08 AM
#2
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Joined: Nov 2009
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From: Ohio
i was told on another board that it should be 36 psi but i was also told to check the pressure you need to disconnect the vacumm hose to the regulator i dont know anyone out there help !!!
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08-17-2010 | 12:11 PM
#3
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From: On a Boat
pressure
psi Prime 42-45 lbs hold at lease 35 lbs 30 minutes when key turned off
with vac ref
PSI Idle 35-37
PSI light load 37-40
WOT 40-43 LBS
w/o vac ref
38-42
NOTE: stock injectors, Stock BPW settings on ECU
with vac ref
PSI Idle 35-37
PSI light load 37-40
WOT 40-43 LBS
w/o vac ref
38-42
NOTE: stock injectors, Stock BPW settings on ECU
