2000 Cherokee cylinder 6 misfire HELP
08-28-2011, 06:14 PM
#1
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Year: 2000
Model: Cherokee
Engine: l6
2000 Cherokee cylinder 6 misfire HELP
Changed my plufs, the old ones were rusted and way burnt. Runs worse with the new ones in. Help me out if you can guys. Thanks
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08-28-2011, 10:26 PM
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Year: 2000
Model: Cherokee
Engine: l6
I have done that. I did that first. But its still 6. It read misfire in 6 with the old plugs and that's why I changed them. But now its worse than it was.. I can hear the misfire "tick" through my speakers. And it sputtars and putts at idle. But past 1200 rpm its smooth. ??? I dunno. Maybe injector/s. Or new coil rail. But I would think if it were the coil rail, then 5 would be bad too because they are on the same coil. I'm stumped.
08-29-2011, 07:18 AM
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Year: 2000
Model: Cherokee
Engine: 4.0L
Try swapping the plug caps from number 6 and another cylinder. If you are hearing something through your speaker, then it sounds like an electrical short somewhere - and that would be either plug caps, plug leads, or bad coil pack.
08-29-2011, 07:24 AM
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Year: 1987
Model: Cherokee
Engine: I6 4.0L
Definitely worth checking/changing injector. That was the problem in mine (same cylinder), granted mine is 13 years older, but a bad injector will cause terrible idle and smooth out at higher RPMs.
08-29-2011, 10:03 AM
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Model: Cherokee
ive got the same exact problem as you, cylinder 6 missfire. I have replaced plugs and even the coilpack and still nadda. Are you having issues at startup? If I try to just crank the truck it will just turn over and over until i quit. As soon as I turn the key off then turn it back over its fires right up. its 50/50 but sometimes it runs perfect others it idles like **** and just chugs until I kill it and start it back up. Im am going to try to swap the injectors this weekend. Will let you guys know.
08-29-2011, 02:42 PM
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Year: 2000
Model: Cherokee
Engine: l6
Mine fires right up but you can feel the miss. It wobbles and the tach bounces until you give it gas then its smooth. I was heading towards injectors too because if it were the coil I'd have 5 and 6 because they are the same coil.. let me know how it goes. Thanks
