Engine cranks but will not start?

Tiny
TDOGGJENKINS
  • MEMBER
  • 3 POSTS
  • 1991 JEEP WRANGLER
  • 4 CYL
  • 4WD
  • MANUAL
  • 160,000 MILES
My 91 jeep wrangler won't start
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Thursday, September 24th, 2020 AT 6:32 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What is it doing cranking over and w/n start or just won't crank at all/nothing when you turn key to cranking position-let me know

These guides can help us

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down these guides and report back.
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Thursday, September 24th, 2020 AT 6:32 PM (Merged)
Tiny
TDOGGJENKINS
  • MEMBER
  • 3 POSTS
It's cranking over but won't start, I repalced the battery, spark plugs and cables, distributer cap and button, and ignition coil. And still nothing.
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Thursday, September 24th, 2020 AT 6:32 PM (Merged)
Tiny
TDOGGJENKINS
  • MEMBER
  • 3 POSTS
I haven't tried testing the spark plug yet, so I just unplug one of the spark plug boots and hold it close to the engine block and have someone crank the engine and look and listen for spark and sound? I also bought an ignition control module but for the life of me can' t find it in the engine compartment to replace it.
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Thursday, September 24th, 2020 AT 6:32 PM (Merged)
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
I see Ras Hasn't found you again,

I will not attempt a Corporate takeover---I will just try to help you along to make up some idle time

This Site is being Re-Vamped as we communicate, things aren't working as they should, and its difficult to RE-LOCATE a post with a reply. Especially for RAS. He's probably got hundreds of answers to reply back to (I may have half-a-dozen, and its hard on me!)

If I am wrong about this, RAS might pop back in and correct me (so watch for that!)

With the Plug wire test--stick (wedge) a nail or like Object in the plugs boot opening sorta between the actual metal plug connector and the rubber (as if you are extending the metal slightly out of the boot. (Don't pokey a hole in your rubber boot!)

Hold this 3/16 from the engine block or similar metallic, grounded engine component. And roll the engine over a few times. While either you hold the wire with insulated pliers ETC----Or just let your Buddy hold it barehanded, insure someone is watching for the QUALITY of the spark, being as RAS Described. Your Pal may not see it, he may feel it. But that will not tell you whether it was BLUE and SNAPPING!

OK, disregard the Buddy Boinking! Just kidding, no sense in him being mad at the both of us!

I did have my Sister do that once--she will not assist me in a car repair anymore!

The IGNITION MODULE IS PROBABLY IN YOUR DISTRIBUTOR

If the old one lays flat in there, with some sorta grease between it and the metal distributor housing----Thats how it DISSIPATES HEAT---this will extend its life too. So don't install it dry.

You can usually obtain that HEAT DISSIPATING Grease in sorta a small Condiment packet at the parts house without having to buy a big container!

YOUR TURN OR RASMATAZ's TURN

KEEP US POSTED on your progress

The Medic. Merry Chrismas from "WILLY"
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Thursday, September 24th, 2020 AT 6:32 PM (Merged)
Tiny
GARRISON55
  • MEMBER
  • 1 POST
  • 1990 JEEP WRANGLER
Engine Mechanical problem
1990 Jeep Wrangler

engine will turn over but will not start
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Thursday, September 24th, 2020 AT 6:33 PM (Merged)
Tiny
MECHCURT
  • MEMBER
  • 184 POSTS
Hope this late post helps. Not much info in your question but ill try and give you some help. Cranks ok but does not start. First ensure you have fuel, On a 90 I believe you have a fuel rail and you can check vor pressure on the schrader valve, be careful its under pressure and will spray out whatch your eyes. If you have fuel then check for spark when cranking by using a spark tester or by holding a spark plug close to ground and observing the spark. Try this and get back to me and let me know. Thanks Curt
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Thursday, September 24th, 2020 AT 6:33 PM (Merged)

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