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ecoleman1 10-23-2012 08:46 PM

black smoke
What causes sometimes rough idle and blowing black smoke upon accelerating hard on my 96 Grand Cherokee with inline 6 cyl??? thanks

Madanio24 10-23-2012 09:01 PM

Re: black smoke
too rich?

ecoleman1 10-23-2012 09:09 PM

Re: black smoke
Yes, seems too rich, but I don't know what is causing it. Runs very good above idle like on highway. Peppy, but with some black smoke on heavy acceleration.

SvenskaJeepGuy 10-23-2012 09:15 PM

Re: black smoke
Check this forum for more help.....

Grand Cherokee - ZJ - Jeep Garage - Jeep Forum

ecoleman1 10-23-2012 09:33 PM

Re: black smoke
Thanks! I checked the link to the forum, but didn't find anything directly related to this problem. thanks, guys

VistaCruiser 10-29-2012 11:11 AM

Re: black smoke
Have you tried pulling any codes? Might at least give you a place to start looking.


Madanio24 10-29-2012 11:28 AM

Re: black smoke
Can you get codes from a 96?

ecoleman1 10-29-2012 11:56 AM

Re: black smoke
OK guys, I'm done. Took it to garage and it was O2 Sensor upstream. Thanks for all the help!!

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