post #1 of Old 06-21-2010, 09:27 PM Thread Starter
smithjeep11
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1989 YJ Wrangler 
 
Join Date: Jun 2010
Location: Maryland
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Low fuel pressure

I have an 89 YJ with 4.2 258i and stock fuel system. I have recently replaced the fuel pump and fuel filter. I recently checked the fuel pressure and found it to be between 1 and 2 psi. This seems very low. What is the fuel pressure suppose to be? What could be causing this?


Last edited by smithjeep11; 06-22-2010 at 09:36 AM.
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post #2 of Old 06-21-2010, 09:45 PM
monkeyhouse
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1997 ZJ 
 
Join Date: Sep 2009
Location: Cumberland, Maryland
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Quote:
Originally Posted by smithjeep11 View Post
I have an 89 YJ with stock motor and stock fuel system. I have recently replaced the fuel pump and fuel filter. I recently checked the fuel pressure and found it to be between 1 and 2 psi. This seems very low. What is the fuel pressure suppose to be? What could be causing this?
did you get that on the rail at the schrader(sp) valve? if so, yes, that's low...heck that's low at the carb.

First Jeep was an 1989 YJ, 6 cylinder 4.2L , 258. Nuttered and TeamRushed, Weber 38 DGES, Now, I'm venturing into the world of Grand Cherokees
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post #3 of Old 06-21-2010, 10:22 PM
MJMPC
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1991 YJ Wrangler 
 
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Location: Elizabethtown
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Fill out your jeep info so we know what you have.

MIKE

http://www.dav.org/

MJM Powder Coating
Elizabethtown Ky.

http://www.cityprofile.com/
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post #4 of Old 06-21-2010, 10:28 PM
monkeyhouse
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Originally Posted by MJMPC View Post
Fill out your jeep info so we know what you have.
Can't believe I missed that man. Thanks for havin my back, lol

First Jeep was an 1989 YJ, 6 cylinder 4.2L , 258. Nuttered and TeamRushed, Weber 38 DGES, Now, I'm venturing into the world of Grand Cherokees
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post #5 of Old 06-21-2010, 11:58 PM
MJMPC
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That helps alot have you checked your fuel filter ? Make sure it is mounted right.

MIKE

http://www.dav.org/

MJM Powder Coating
Elizabethtown Ky.

http://www.cityprofile.com/
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