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| OEM Tech Discussion Forum for OEM (Original Equipment) or stock XJs and MJs. |
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Thread Tools | Display Modes |
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#1
February 22nd, 2021, 21:24
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What could be causing this??
I’ve been having this issue for quite some time. The attached video is my 96 Cherokee w/ the 4.0 at idle after a short drive.
https://youtu.be/4y9vDMhmjJkp 
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#2
February 23rd, 2021, 04:51
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Re: What could be causing this??
What are we seeing, flames from the tail pipe, or is that the catalytic converter ?
If flames, it must be be running incredibly rich. Is the Check Engine Light ON ? Have you pulled any CEL trouble codes ? The obvious suspects would be worn, defective, or incorrect tune-up/ignition/emissions parts, or faulty fuel injectors.
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#3
February 27th, 2021, 13:39
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Re: What could be causing this??
How short is your exhaust ? because if it is that short that is normal all motors will do that . also at full throttle it will also run with a blue flame about 10 inches long .
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