Fuel pressure at idle?
07-16-2011, 02:17 PM
#1
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Year: 2000
Model: Cherokee
Engine: 4.0L
Fuel pressure at idle?
I was test driving a few Jeeps and noticed one at idle had 0(or slightly right above) fuel pressure. Is this normal? What does everyones Jeep have for fuel pressure at idle?
07-17-2011, 08:59 AM
#3
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Model: Grand Cherokee
Engine: 4.7
Pretty sure spec is just above 15 psi at idle. The one you drove very well could have a bad sensor too.
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07-17-2011, 09:10 AM
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08-02-2011, 03:24 PM
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^^ agreed. fuel pressure would need to be read with a gauge on the schrader on the fuel rail. fuel pressure on lates is 49 +/- 5psi. Oil pressure should be between 20 and 50 depending on rpm.
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