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Unread 06-22-2015, 01:44 PM   #1
donald73d
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proper fuel pressure

What should the fuel pressure read with engine at idle on the port off the fuel rail? 2001 w/4.0 engine.

The Haynes manual has it a 44 to 54. Mine is 62?

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Unread 06-22-2015, 02:07 PM   #2
86cj74.2L
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Quote:
Originally Posted by donald73d
What should the fuel pressure read with engine at idle on the port off the fuel rail? 2001 w/4.0 engine. The Haynes manual has it a 44 to 54. Mine is 62?
it's a little high, but depending on how cheep your pressure gauge is its in the ball park.
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Unread 06-22-2015, 04:40 PM   #3
DC99
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I checked mine the other day and got 60psi with a mac gauage
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Unread 06-22-2015, 04:46 PM   #4
doityourselfMM
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Both my 1999 and 2004 FSMs state 49.2 psi +/- 5 psi at the fuel injectors. Your Fuel Filter/ Pressure Regulator may be the culprit.
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