Shut off while driving and will not start

1983 JEEP CJ7

1,234 MILES • 4.6L • 6 CYL • 4WD • MANUAL

RYANCROWLEY03

MEMBER
2 POSTS

I have the vehicle listed above and it is my first car and although I have worked in a shop I cannot figure this out. While I was driving the engine suddenly shut off, I tried starting it with starter fluid and it would run extremely rough for a couple seconds then shut off again. Since then I have replaced the fuel pump, ignition control module, ignition switch, ignition coil, fuel filter and I know it’s getting good spark, good gas, and enough air but it still will not start. I’ve exhausted my experience and knowledge, any help is greatly appreciated

Aug 2, 2021 at 11:29 AM

RYANCROWLEY03

MEMBER
2 POSTS

Update: I pulled my spark plugs again and I now have no spark to any cylinder, however most of my ignition system is new. so I am still totally at a lost.

Aug 2, 2021 at 11:57 AM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,240 POSTS

Hi,

If you have spark, fuel, and compression, the only thing left is timing. Have you checked ignition timing?

If you look at the pics below, they provide the directions for adjusting timing. Since it isn't running, take a timing light and see if it is firing when it should.

If you look at pic 3, it explains what to check for an intermittent ignition problem. You mentioned that you had no spark but now do, so that is why I added it.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.

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Aug 3, 2021 at 1:20 PM

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