Piston Slap or Engine Knock?

Asked by Jun 16, 2015 at 01:05 PM about the 2007 Chevrolet Malibu LS

Question type: Maintenance & Repair

I own a 2007 Chevy Malibu LS 2.2L 4 Cylinder Automatic.  When i start the engine
while cold, there's a knocking or slapping noise.  It only happens when it's cold and as
the engine warms up it slowly goes away, i just want to figure out if it's piston slap or if
the noise is being made by something worse like a bad rod or sparks or broken valves.  
Ideas?  (btw i'm 17 so my knowledge is limited) (My car is the one on the left in the
picture)

1 Answer

19,800

I had the same problem with my 07 Nissan Versa it only made a tapping noise in cold weather when it was warm no noise at all. I changed my oil and added Lucas Engine Oil Stablizer and with in 30 - 45 minutes of running the tapping was gone and that's been 6 months ago. Do not no if it would work for you but I think it's worth a try.

Your Answer

Chevrolet Malibu Experts

  • #1
    tenspeed
    Reputation
    2,110
  • #2
    T_S_T
    Reputation
    2,030
  • #3
    Tom Demyan
    Reputation
    1,500
View All

Related Models For Sale

Used Chevrolet Impala
518 Great Deals out of 33,770 listings starting at $950
Used Ford Fusion
1,049 Great Deals out of 71,238 listings starting at $1,200
Used Honda Accord
1,102 Great Deals out of 61,486 listings starting at $999
Used Toyota Camry
1,051 Great Deals out of 71,326 listings starting at $295
Used Nissan Altima
1,049 Great Deals out of 75,008 listings starting at $1,200
Used Dodge Charger
446 Great Deals out of 27,662 listings starting at $1,989
Used Hyundai Sonata
721 Great Deals out of 49,892 listings starting at $790
Used Nissan Maxima
282 Great Deals out of 23,069 listings starting at $899
Used Kia Optima
473 Great Deals out of 29,206 listings starting at $2,450
Used Honda Civic
827 Great Deals out of 72,772 listings starting at $1,000
Used Chevrolet Equinox
1,009 Great Deals out of 69,931 listings starting at $2,200
Used Chevrolet Silverado 1500
2,146 Great Deals out of 167,073 listings starting at $1,498

Used Cars For Sale

2017 Chevrolet Malibu LS For Sale
57 Great Deals out of 8,728 listings starting at $12,999
2016 Chevrolet Malibu LS For Sale
7 Great Deals out of 636 listings starting at $12,590
2015 Chevrolet Malibu LS For Sale
31 Great Deals out of 855 listings starting at $7,900
2014 Chevrolet Malibu LS For Sale
16 Great Deals out of 956 listings starting at $6,999
2013 Chevrolet Malibu LS For Sale
20 Great Deals out of 585 listings starting at $6,500

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.