Cranks over, will not start

Tiny
JOHNNYMAC59
  • MEMBER
  • 1998 JEEP GRAND CHEROKEE LAREDO
  • 4.0L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
Engine "hiccuped" twice the other night going to the store. Also, stalled once and it took several seconds of cranking to restart. Next morning, it wound not start at all and has not since.
Saturday, July 21st, 2018 AT 9:13 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi and thanks for using 2CarPros.com.

Based on the symptoms, it could be a couple different problems. However, if the check engine light was on, scan the computer to determine what trouble codes are stored in the vehicle's computer. Here is a quick video showing how it is done. Also, I realize not everyone owns a scanner, but most parts stores will rent or lend them to potential customers.

https://youtu.be/YV3TRZwer8k

If you do not have access to a scanner, we need to check for ignition spark and fuel pressure. Here is a link which describes how to check fuel pump pressure:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Here is a link which shows how to check ignition spark:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Again, these test require some basic equipment, but most parts stores will lend you the tools.

If you have no access to any of the parts, try this trick. See if the engine will start for a couple seconds using starting fluid. If it does, then the problem is fuel related. If it will not start with starting fluid, chances are it is ignition related.

When checking fuel pressure, the reading should be between 44 and 54 psi.

Let me know if this helps. Also, if you have other questions, feel free to ask.

I hope this is helpful to you.
Take care,
Joe
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Saturday, July 21st, 2018 AT 9:46 PM

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