What is the probability that an engine knock is a loose rod?

35

Asked by Apr 13, 2008 at 01:15 PM about the 1977 Chevrolet Camaro

Question type: Maintenance & Repair

The engine in this car is only 13 months old. It has only been driven to car shows last summer and has sat in the garage for the past 7 or so month until just about two weeks ago. We took it to the first car event last week end and it started this knocking noise. I am hoping it is not a rod obviously but how can I can check without taking the pan off? It would not be easy to do. We do have another engine but I don't want to go thru this again so soon. Any suggestions?

4 Answers

46,135

Sounds like something wasn't properly torqued in the new engine or maybe has worked loose. You could do a compression test maybe, but even that's not going to tell you about the knock if it's not causing a problem.

45

a knock is normally the piston not clearing the cylinder head so i would take its apart and check it because if you dont you will destroy the motor very quickly.

55

could be a loos rod that could be reajusted. but it could be that you need to replce them try c.d 2 moter oil for taps or rods it could stop the noise. use a waterhose about 2 feet long put one end to the valvecover and the other end to your ear get the idea

175

It probably is the rod "loose" but youre into a motor rebuild either way. There is no adjusting them, if its loose its junk. Plan on tearing the oil pan off the motor and physically looking at all the parts. If you take off the main caps and the bearings are copper colored, theryre junk. any movement in the assembly means its junk. Then you have to figure out why. Could be a faulty oil pump, could be they were intsalled wrong, could be they were faulty parts, could be the motor wasnt allowed to break-in properly and if its a new motor and break-in oil isnt used then you will have problems. Also, what oil are you using have you changed it within 3000 miles, what kind of oil are you using

Your Answer

Camaro

Looking for a Used Camaro in your area?

CarGurus has 31,056 nationwide Camaro listings starting at $1,450.

ZIP:

Chevrolet Camaro Experts

  • #1
    dandyoun
    Reputation
    1,760
  • #2
    carGrrl
    Reputation
    1,220
  • #3
    Tom Demyan
    Reputation
    1,140
View All

Related Models For Sale

Used Ford Mustang
445 Great Deals out of 42,042 listings starting at $1,488
Used Dodge Challenger
271 Great Deals out of 25,531 listings starting at $6,972
Used Chevrolet Corvette
138 Great Deals out of 16,155 listings starting at $3,000
Used Dodge Charger
458 Great Deals out of 34,933 listings starting at $2,000
Used Ford F-150
3,268 Great Deals out of 224,292 listings starting at $1,250
Used Chevrolet Impala
557 Great Deals out of 33,311 listings starting at $1,499
Used BMW 3 Series
1,128 Great Deals out of 33,128 listings starting at $1,428

Used Cars For Sale

2018 Chevrolet Camaro For Sale
4 Great Deals out of 10,589 listings starting at $19,486
2017 Chevrolet Camaro For Sale
127 Great Deals out of 7,884 listings starting at $17,900
2016 Chevrolet Camaro For Sale
34 Great Deals out of 1,236 listings starting at $16,991
2015 Chevrolet Camaro For Sale
122 Great Deals out of 2,603 listings starting at $11,995
2014 Chevrolet Camaro For Sale
75 Great Deals out of 2,192 listings starting at $11,000

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.