My 2002 jeep grand cherokee 4.7 v8 is having lots of problems.I checked the cylinders with a gauge and cylinder 1 came out to 50 psp i know this is bad. What do i do now. Please help

Asked by Jan 30, 2014 at 06:49 PM about the 2002 Jeep Grand Cherokee Limited

Question type: Maintenance & Repair

1 Answer

90,635

Try putting in a little oil in the low cylinder and rerun the compression test, if it comes up a fair amount then you have bad rings if it stays the same then you have a valve or piston problem, you could also pressurize the cylinder and listen to hear where the air is going, either out the exhaust, intake or into the oil pan, that will tell you if you have to pull the engine or just the heads.

Your Answer

Add photo

Related Questions

  • Cost of Replacing a Cylinder Head Gasket JGC 4.7 V8 3 answers

    My 2000 JGC WJ 4.7 V8 has recently lost power, is idling rough and is getting harder to start. I've checked the coil pack (all ok) and checked the plugs, (although dirty they are working). I think I...

    2000 Jeep Grand Cherokee Limited 4WD

    -

    Maintenance & Repair

  • What could be wrong with my 1996 Jeep Grand Cherokee? 40 answers

    I've been having problems with my Jeep. It started like 3 months ago, the engine just cuts off while I'm driving or at a stop light. In other occasions the engine starts skipping, turns off, then will...

    1996 Jeep Grand Cherokee Laredo

    -

    Maintenance & Repair

  • 2001 Jeep Grand Cherokee 17 answers

    I have a 2001 Jeep Grand Cherokee the check engine light came on as misfire cylinder 3 I fixed that replaced the coil pack and spark plugs the the check engine came on for 02 sensors I fixed those a...

    2001 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

  • misfire in cylinder 4 on a 6 cylinder jeep grand cherokee 2001 HELP! PLEASE! 1 answer

    Ok at a loss here please help. Had check engine light on. Code came up as a misfire in cylinder 4. So replaced all spark plugs ( they had a white powder like substance on heads) and new coil packs (ar...

    2001 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

  • how long does a grand cherokee last? (mileage wise) 37 answers

    how long does a grand cherokee 1999 last? (mileage wise) i would like to buy one but do you know if this car have some problem ??? thanks

    1999 Jeep Grand Cherokee Laredo 4WD

    -

    General

Search Jeep Grand Cherokee Questions

Jeep Grand Cherokee Experts

#1 inuevafreak
inuevafreak
Reputation 2,030
#2 Tom Demyan
Tom Demyan
Reputation 1,810
#3 thejeepdoctor
thejeepdoctor
Reputation 1,730
View All

Related Models For Sale

Used Jeep Cherokee
430 Great Deals out of 60,460 listings starting at $2,500
Used Jeep Wrangler
268 Great Deals out of 18,610 listings starting at $2,995
Used Ford Explorer
811 Great Deals out of 74,564 listings starting at $750
Used Toyota 4Runner
263 Great Deals out of 20,415 listings starting at $1,995
Used Dodge Durango
254 Great Deals out of 22,865 listings starting at $1,500
Used Chevrolet Tahoe
565 Great Deals out of 27,384 listings starting at $999
Used Ford F-150
2,227 Great Deals out of 208,523 listings starting at $1,499
Used Chevrolet Silverado 1500
1,739 Great Deals out of 167,410 listings starting at $1,800
Used BMW X5
440 Great Deals out of 16,356 listings starting at $2,000
Used Chevrolet Camaro
155 Great Deals out of 32,838 listings starting at $1,995
Used Ford Mustang
374 Great Deals out of 46,779 listings starting at $1,500
Used Jeep Liberty
243 Great Deals out of 7,228 listings starting at $990

Used Cars For Sale

2017 Jeep Grand Cherokee Limited For Sale
3 Great Deals out of 3,206 listings starting at $30,800
2016 Jeep Grand Cherokee Limited For Sale
14 Great Deals out of 447 listings starting at $25,273
2015 Jeep Grand Cherokee Limited For Sale
24 Great Deals out of 549 listings starting at $22,995
2014 Jeep Grand Cherokee Limited For Sale
20 Great Deals out of 440 listings starting at $17,277
2013 Jeep Grand Cherokee Limited For Sale
4 Great Deals out of 56 listings starting at $17,219