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Unread 11-25-2011, 02:38 PM   #1
TA-YJ
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1992 YJ Wrangler 
 
Join Date: Dec 2007
Location: Pennsylvania
Posts: 526
Fuel Pressure

Real simple question. I need to know what the fuel pressure should be for a 92 2.5 MPI engine. Ive searched, but have seen conflicting results from anywhere from 15psi to 45psi. I thought it was 31psi at idle, but I am not sure now. I am at 34psi so I just needed conformation. Thanks.

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1992 YJ 2.5L
Engine Mods:4.0L TB, Ford Design III 19lb Injectors, Firepower Ignition System, Ford TBird Electric Fan, Pacesetter Header, Magnaflow Cat, Dynomax Super Turbo Exhaust
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Unread 11-25-2011, 02:54 PM   #2
moonshinefuel
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1995 YJ Wrangler 
 
Join Date: Feb 2009
Location: Los Angeles. California. United States.
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30 is about right, it can go up if you remove a certain line on the fuel rail.
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Unread 11-25-2011, 03:13 PM   #3
oldtime_ironman
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1991 YJ Wrangler 
 
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31 PSI at idle, it may go up to 39 PSI if you unplug the vacuum line from the regulator.
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Unread 11-25-2011, 03:19 PM   #4
TA-YJ
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1992 YJ Wrangler 
 
Join Date: Dec 2007
Location: Pennsylvania
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Im at 34psi with all lines connected, so I think Im good. From what I have read its better to have a little higher psi with the ford injectors anyway. Thanks for the quick response.
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1992 YJ 2.5L
Engine Mods:4.0L TB, Ford Design III 19lb Injectors, Firepower Ignition System, Ford TBird Electric Fan, Pacesetter Header, Magnaflow Cat, Dynomax Super Turbo Exhaust
Suspension Mods:BDS 2" Lift, M.O.R.E. 5/8" HD Shackles, 1" Brown Dog MML
Other:LED Tails and Herculined
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