Fault Code 27 - Fuel Injector Problem

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Apr 25, 2020 | 10:59 AM

#16

Gryphon439

Junior Member

Joined: Jul 2010

Posts: 91

Likes: 1

From: San Jose, California

Year: 1991

Model: Cherokee(XJ)

Engine: 4.0

Quote:

Originally Posted by Cummins93

If you are passing raw fuel through the combustion chamber either the injector is stuck wide open or the plug isn't firing the charge. If you disconnect the suspected injector and the unburnt fuel stops being produced from the exhaust then you found your issue. If it keeps producing raw fuel then multiple injectors maybe the issue or your injectors are fine and something is telling the ECU to add fuel.

This turned out to be my problem. Although, all of my injectors did test fine, I found that #1 was passing fuel 24/7 causing there to be way too much fuel. Thank you so much for the assistance on this injector issue.

Now that this problem is resolved, another has popped up, if anyone can help with jolting/sputtering/bucking i'm trying to find a solution on this thread: https://www.cherokeeforum.com/f2/spu...7/#post3602639