need help poping back through breather
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Newbie
Joined: Mar 2011
Posts: 1
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Model: Cherokee
need help poping back through breather
hello I have a 91 with a 4.0 and at first it would not start after being driven give it a couple hours and it would fire right up. then it started running rough and u have to pump it to start in the morning. now it will run ok for a couple of seconds then starts cutting out and if you are real easy on the throttle it will rev up then it pops back through the breather. i replaced the crank sensor and tuned it up. any help would greatly appreciated thanks
Old Skewl CF like a Sir
Joined: Feb 2008
Posts: 4,355
Likes: 3
From: Fort Myers, FL
Year: 1996
Model: Cherokee
Engine: 4.0L High Output OBDII
Having a similar issue on my ZJ I've been kinda trying to figure out. I replaced the MAF sensor and the popping stopped for a few weeks.
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