1991 Jeep Cherokee, 4x4,b inline 6 engine, Laredo edition
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Model: Cherokee (XJ)
1991 Jeep Cherokee, 4x4,b inline 6 engine, Laredo edition
Just bought my Cherokee. Has a nocking sound coming from the engine area. Don't know exactly what is wrong with it. A friend said it was a piston but want to know if someone has a different opinion before we start pulling engine apart. Any ideas are helpful.
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Really hard to tell you what a knock is without hearing it. There are several things it could be. one yes is piston slap does it change when warm? is only at idle? only when hot/warm?
Really hard to tell you what a knock is without hearing it. There are several things it could be. one yes is piston slap does it change when warm? is only at idle? only when hot/warm?
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Model: Cherokee (XJ)
Nocking sound
It sounds like a rock hitting inside the engine area. It's starts when the Jeep is warmed up and that's in idle. Also at low speeds. But if I hit the gas or drive at a higher speed roughly 30 mph it goes away. I've googled it and I found out it could be one of three things, flexplate bolts are loose? The converter is bad? Or a bad piston or valve stem?
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
First thing I'd do is tighten the flexplate bolts.
https://www.cherokeeforum.com/f51/ho...ocking-125547/
https://www.cherokeeforum.com/f51/ho...ocking-125547/
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