Positive spark and Fuel no start?

Tiny
JP_MARR
  • MEMBER
  • 1983 JEEP CJ7
  • 77,000 MILES
Honestly feel like I have tried everything. Here are some of the things new starter, new solenoid, new ICM.

I have tried testing the voltage at the coil on the positive siding run position and it appears to have 6 V. When I turn it over, I have fuel coming into the carb, the coil has spark, which is being sent to the spark plugs, but still have no start.

Can someone please give me some advice? Thanks, John.
Sunday, April 13th, 2025 AT 6:19 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Sure, I can help you get it running, the first 6 volts sounds low, it should be 10 to 12 volts. Next, how does the engine sound while cranking? Can you upload shaft video? That way I can tell if the engine is in okay condition.

This guide can help as well:

https://www.2carpros.com/articles/how-to-test-engine-compression

Please go over this video as well, which can give us more information on what is missing.

https://www.youtube.com/watch?v=lXLJbuAZ4CE

The power source to the coil is supplied by the ignition switch, red/wht. I would test the voltage with the coil disconnected FYI. Please go over these guides and get back to us.
Was this
answer
helpful?
Yes
No
Monday, April 14th, 2025 AT 12:10 PM

Please login or register to post a reply.

Related Engine Not Running Content

Car Cranking but Not Starting? Try This
VIDEO
Car Cranking but Not Starting? Try This
Instructional repair video
Engine Not Starting
GUIDE
Engine Not Starting
Over the past 20 years at 2CarPros we have identified the top problems that are easily fixed. This guide can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE