engine knocking in 02 grand cherokee ...4.7l engine

35

Asked by Apr 05, 2013 at 10:54 PM about the 2002 Jeep Grand Cherokee Sport 4WD

Question type: General

7 Answers

102,175

Knocking - when does it happen? Where is it coming from? When did you discover it? When does it change?

3 of 3 people found this helpful.
35

it burns oil.....no oil leaks.....don't know where the ticking/knocking is coming from.........my oil levels are normal ....it ticks/knocks while it idling and when driving

3 of 3 people found this helpful.
102,175

If it's ticking all the time, it could be a collapsed lifter for the valves. If it knocks on acceleration, it could be a rod bearing.

2 of 2 people found this helpful.

sounds like the timing is way too soon, 'course maybe this is an engine to where the distributor does not exist, so it's gotta be a vaccuum leak, you could use an unlit propane torch to find it...the speed will increase when you find it~

1 of 1 people found this helpful.
3,270

Does it knock louder rite at start-up?

5 of 5 people found this helpful.
20

hey mrmoony i have the same thing going on with mine. yes... it knocks louder at start up. mine actually stops knocking after a while.

2 of 2 people found this helpful.

still maintain that it's the vacuum line what connects the fuel pressure regulator, would go defective...leak vacuum causing high idle/and fast timing and would not regulate the fuel to the rail~

Your Answer

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 72,506 nationwide Grand Cherokee listings starting at $1,200.

ZIP:

Jeep Grand Cherokee Experts

  • #1
    inuevafreak
    Reputation
    2,150
  • #2
    Tom Demyan
    Reputation
    1,930
  • #3
    thejeepdoctor
    Reputation
    1,900
View All

Related Models For Sale

Used Jeep Cherokee
409 Great Deals out of 59,988 listings starting at $2,495
Used Dodge Durango
302 Great Deals out of 23,989 listings starting at $1,500
Used Ford Explorer
1,064 Great Deals out of 70,902 listings starting at $1,000
Used Toyota 4Runner
317 Great Deals out of 25,484 listings starting at $1,750
Used Jeep Wrangler
434 Great Deals out of 18,874 listings starting at $2,900
Used Chevrolet Tahoe
792 Great Deals out of 42,146 listings starting at $1,980
Used Ford F-150
2,847 Great Deals out of 213,245 listings starting at $1,295
Used Chevrolet Silverado 1500
2,417 Great Deals out of 174,056 listings starting at $699
Used BMW X5
348 Great Deals out of 15,251 listings starting at $2,995
Used Toyota Highlander
546 Great Deals out of 34,276 listings starting at $2,450
Used Chevrolet Camaro
458 Great Deals out of 31,536 listings starting at $3,550

Used Cars For Sale

2018 Jeep Grand Cherokee For Sale
3 Great Deals out of 35,172 listings starting at $24,500
2017 Jeep Grand Cherokee For Sale
131 Great Deals out of 9,938 listings starting at $21,400
2016 Jeep Grand Cherokee For Sale
72 Great Deals out of 2,332 listings starting at $19,399
2015 Jeep Grand Cherokee For Sale
183 Great Deals out of 6,475 listings starting at $14,730
2014 Jeep Grand Cherokee For Sale
167 Great Deals out of 5,464 listings starting at $13,597

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.