When you hear someone say "my engine blew up"
12-12-2016, 04:12 PM
#16
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Location: Canton, MI
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Year: 1999
Model: Cherokee
Engine: 4.0
Piston slap (mostly #5 or#6 cylinder) can turn in to the piston failing and the connecting rod going thru the side of the cylinder block. To me, this is the engine "blowing up". No regular maintenance can prevent it.
If you are experiencing piston slap and let it go get ready to say "Good night Gracie".
If you are experiencing piston slap and let it go get ready to say "Good night Gracie".
12-12-2016, 04:58 PM
#18
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Year: 2000 and 1998
Model: Cherokee
Engine: 4.0
oops, add piston slap. how can i help? oil additive?
if my head goes or piston blows how do i plan to use my 98,4.0 at 130000 sounding great?? lots of stuff to keep from 2000 and add to 98 huh? list?
guidlines?
i hope it lasts till june! nice work weather!
12-12-2016, 05:25 PM
#19
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Join Date: Feb 2012
Location: central IN
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Year: 1997
Engine: 4.0
funny you mention this. mine sees at least two 5k rpm shifts a day. i've put 90k miles on this thing always flooring the **** out of it. odo reads 296k now. i'm certainly not condoning that everyone do what i do. but it's almost comical how afraid you guys are. esp an inline motor. 5k is nothing. educate yourself on how these things work, maybe you'll have a little more fun with them.
12-13-2016, 09:47 AM
#20
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Location: Vernon NJ
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Year: 1998
Model: Cherokee
Engine: 4.0
I have 291,000 miles on mine. And beat mine everyday. I change the oil every 10,000 miles using Rotella T6 5W-40 and Purolator Boss oil filter PBL30001. I will see 4k rpms sometimes. It still has 40+ psi oil pressure on the highway and 20-30 psi idle.
12-13-2016, 04:46 PM
#21
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
I knew some folks with real life experience would chime in.......
12-13-2016, 05:02 PM
#22
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Year: 99
Model: Cherokee
Engine: 4.0
The ol' redline tune does motors good. I think mine runs better now from climbing the mountains so much than when I first got it. Blow the crap out!!