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

45,285

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.

45

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 31,749 nationwide Camaro listings starting at $1,450.

ZIP:

Chevrolet Camaro Experts

  • #1
    dandyoun
    Reputation
    1,760
  • #2
    carGrrl
    Reputation
    1,200
  • #3
    Tom Demyan
    Reputation
    1,090
View All

Related Models For Sale

Used Ford Mustang
567 Great Deals out of 36,996 listings starting at $2,595
Used Dodge Challenger
271 Great Deals out of 24,370 listings starting at $7,750
Used Chevrolet Corvette
175 Great Deals out of 18,605 listings starting at $3,941
Used Dodge Charger
360 Great Deals out of 30,701 listings starting at $2,000
Used Ford F-150
2,923 Great Deals out of 215,531 listings starting at $1,295
Used BMW 3 Series
1,084 Great Deals out of 34,190 listings starting at $1,000
Used Chevrolet Impala
549 Great Deals out of 35,121 listings starting at $990

Used Cars For Sale

2018 Chevrolet Camaro For Sale
9,357 listings starting at $19,430
2017 Chevrolet Camaro For Sale
151 Great Deals out of 9,416 listings starting at $17,799
2016 Chevrolet Camaro For Sale
47 Great Deals out of 1,381 listings starting at $16,995
2015 Chevrolet Camaro For Sale
100 Great Deals out of 2,595 listings starting at $12,999
2014 Chevrolet Camaro For Sale
70 Great Deals out of 2,294 listings starting at $11,616

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.