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Scott Medina

08-28-2015 01:44 PM

jeep

i have a 2003 jeep grand cherokee 4.0 hard to start put in new fuel pump crank sen cam sen sprak pluges it takes about 4 to 5 cranks to get it to run feul eccon 9 miles to the gallon

zjWaggy

08-28-2015 02:53 PM

jeep

We're gonna need a bit more of a descriptive explanation...

JPXJMOAB

08-28-2015 05:43 PM

jeep

4-5 cranks isn't unusual for a 4.0. Does it idle fine? Have you replaced plug wires?

dave1123

08-29-2015 12:35 AM

No plug wires on a WJ 4.0. How did the plug insulator boots look? What plugs did you use? How clean is the throttle body? Check the MAP sensor for a cracked hose.

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