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Just did my compression test

Old Aug 20, 2010 | 12:54 PM
  #16  
ca441970's Avatar
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From: Easthampton, MA
Year: 1999
Model: Cherokee
Engine: 4.0
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Originally Posted by aj6
( warthog ) i see where your coming from.. it seems like there might two probs?

4cyl is not the greatest and the po301.. both the same? two differint probs? idk..



i think you should try this and see if it moves over... also the wet compression test and a cylinder leak down like warthog said..

let us know what happens
I'm gonna do a wet compression test tomorrow morning too damn hot down here to do it tonight. As far as a leakdown test, I have no way of doing it, never have before either.

Still wondering about the paper test at the tail pipe being sucked in.
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Old Mar 13, 2016 | 02:01 PM
  #17  
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Default Can someone please help me I'm stumped

i bought a 95 keep xj manual and looked at engine surrounding area for oil leaks. The guy assured me there were none. I drove it around the block and checked 4 wheel dr ect.. I popped the hood when I got back and looked again nothing bad seen. the jeep started leaking lots of oil out of dipstick tube after driving for about 45 minutes and higher speeds. I replaced the CCV and did a compression test.

My numbers were:
Cold-
#1. 97PSI
#2. 100PSI
#3. 99PSI
#4. 108PSI
#5. 105PSI
#6. 102PSI

Hot
#1. 103PSI
#2. 118PSI
#3. 111PSI
#4. 112PSI
#5. 120PSI
#6. 114PSI

I've read to multiply highest by .15 and deduct that number from your highest reading and if in that range your good. 103# is in the range but barely. In a 4 hour drive I'm losing 1 quart of oil and creates a fire hazard smoking awful. Any suggestions? I also pulled the oil cap off running and it had a vacuum at idle. Any suggestions are appreciated thanks
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Old Mar 13, 2016 | 03:56 PM
  #18  
Turbo X_J's Avatar
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From: ☼ Blackhole Sun
Year: My Jeep is a GMC
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"Any suggestions?"

re·build
rēˈbild/
verb
verb: rebuild; 3rd person present: rebuilds; past tense: rebuilt; past participle: rebuilt; gerund or present participle: rebuilding; verb: re-build; 3rd person present: re-builds; past tense: re-built; past participle: re-built; gerund or present participle: re-building
1.
build (something) again after it has been damaged or destroyed.
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Old Mar 13, 2016 | 03:56 PM
  #19  
KaMoore's Avatar
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Joined: Feb 2016
Posts: 211
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From: Tucson, AZ
Year: 1999
Model: Cherokee
Engine: 4.0L
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Originally Posted by Jeremy313
i bought a 95 keep xj manual and looked at engine surrounding area for oil leaks. The guy assured me there were none. I drove it around the block and checked 4 wheel dr ect.. I popped the hood when I got back and looked again nothing bad seen. the jeep started leaking lots of oil out of dipstick tube after driving for about 45 minutes and higher speeds. I replaced the CCV and did a compression test.

My numbers were:
Cold-
#1. 97PSI
#2. 100PSI
#3. 99PSI
#4. 108PSI
#5. 105PSI
#6. 102PSI

Hot
#1. 103PSI
#2. 118PSI
#3. 111PSI
#4. 112PSI
#5. 120PSI
#6. 114PSI

I've read to multiply highest by .15 and deduct that number from your highest reading and if in that range your good. 103# is in the range but barely. In a 4 hour drive I'm losing 1 quart of oil and creates a fire hazard smoking awful. Any suggestions? I also pulled the oil cap off running and it had a vacuum at idle. Any suggestions are appreciated thanks
This is known as hijacking a thread. Why don't you post your own thread?
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Old Mar 13, 2016 | 08:57 PM
  #20  
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Sorry. First forum, thought it was similar
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Old Mar 13, 2016 | 09:01 PM
  #21  
KaMoore's Avatar
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Joined: Feb 2016
Posts: 211
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From: Tucson, AZ
Year: 1999
Model: Cherokee
Engine: 4.0L
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Originally Posted by Jeremy313
Sorry. First forum, thought it was similar
It might be similar, but you will get answers to your question and not have to try to figure out when the answer is for you or the OP.
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