Running rich

2002 JEEP WRANGLER TJ
250,000 MILES • 4.0L • 6 CYL • 4WD • MANUAL
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Every sensor changed, not fuel system or computer. Could a worn out timing chain cause this ? Why?
Jan 16, 2019 at 10:16 PM
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Hello,

Low compression can cause a rich conditioner. can we take a reading of a few cylinders to see where we are at? Here is a guide to help us get started:

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

Please run down this guide and report back.





Jan 18, 2019 at 1:49 PM