1989 Jeep Cherokee TAPPING IN MOTOR

Tiny
JTH13
  • MEMBER
  • 1989 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 95,000 MILES
MY 1989 jeep cherokee has a tapping noise but not constent I have had people say it is a lifter and its not a problem and others say it could be a problem

also I have a whistle that goes away when giving the car gas but comes back we I let off
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Wednesday, December 3rd, 2008 AT 2:12 PM

3 Replies

Tiny
MECHCURT
  • MEMBER
The jeep inline 6 is a great motor and can go alot of miles with regular service and maintenance. But somtimes things just where out and weaken over time. Sounds like a lifter has just gotten a little weak. After being driven awhile it quites down. Just normal wear on the lifter itself could cause this or it might be getting a weak oil pump. Probably not. Also the pushrod for this lifter may be clogged up a little and not passing the proper amount of oil. What weight of oil are you running? You may add some STP at normal oil changes and lesson the noise a little, and you might need to tighten the tappet down just a touch on that one valve. The whistling? Is this in the engine compartment? Sounds like a vaccuum leak to me. Check all your vac lines in and around the intake. Let me know if this helps. Curt
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Wednesday, December 3rd, 2008 AT 5:14 PM
Tiny
ENGINEMAN 73
  • MEMBER
ADD THIS TO THE GREAT ADVISE THE TECHNICIAN HAS GIVEN YOU. I HAD A KNOCK IN MY JEEP ENGINE AND THOUGHT I HAD SERIOUS PROBLEM. ON A WHIM I JACKED UP TRUCK REMOVED FLYWHEEL INSPECTION COVER AND CHECKED TORQUE CONVERTER BOLTS AND 1 HAD BACKED OUT TAPPING BLOCK.I WAS A HAPPY CAMPER. MAY NOT BE THE CASE WITH YOURS BUT WORTH CHECKING.
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Wednesday, December 3rd, 2008 AT 5:38 PM
Tiny
JTH13
  • MEMBER
Thanks for your input
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Monday, December 8th, 2008 AT 3:42 PM

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