1989 Chev. 350/5.7 Tbi The #3 cylinder keeps fowling out my spark plug. It misses really bad. It only has 100,000 original miles on it.

Asked by Sunday13 Dec 28, 2016 at 06:13 AM about the Chevrolet Silverado 1500

Question type: Maintenance & Repair

the #3 Cylinder keeps fowling out the spark plug, bad. It is very chard and
does have some oil on the spark plug.  About every two weeks I  have to
replace it.  I have checked rest of the spark plugs and they are fine.  I have
notice blue smoke, just a little when i start it for the first time each day.  I am
losing oil somewhere. About a quart every two weeks.

1 Answer
157,685

Bob answered 7 years ago

Running a dry and wet compression test may help you figure out if it is a valve guide, seal, piston ring or cylinder wall issue. If it is a valve guide seal it is a fairly easy repair.

Mark helpful

Your Answer:

Related Questions

Own this car?

Share your experience with others.
Write a car review

Shortcuts

Search Chevrolet Silverado 1500 Questions

CarGurus Experts

  • #1
    Rowefast
    Reputation
    10,410
  • #2
    John Carson
    Reputation
    9,610
  • #3
    Andrew Olsen
    Reputation
    9,530
View All

Know more, shop wisely

Search

Related Models For Sale

Used GMC Sierra 1500
1,965 Great Deals out of 67,982 listings starting at $3,795
Used Ford F-150
6,027 Great Deals out of 133,967 listings starting at $1,100
Used Chevrolet Silverado 2500HD
1,022 Great Deals out of 30,563 listings starting at $499
Used RAM 1500
3,765 Great Deals out of 90,810 listings starting at $3,499
Used Toyota Tundra
1,155 Great Deals out of 32,375 listings starting at $3,299
Used Dodge RAM 1500
89 Great Deals out of 1,540 listings starting at $1,999
Used Toyota Tacoma
2,046 Great Deals out of 35,538 listings starting at $500
Used Chevrolet Tahoe
1,159 Great Deals out of 22,822 listings starting at $2,000
Used Chevrolet Colorado
936 Great Deals out of 23,967 listings starting at $2,995
Used GMC Sierra 2500HD
541 Great Deals out of 21,650 listings starting at $5,995
Used Ford F-250 Super Duty
1,304 Great Deals out of 43,338 listings starting at $2,999
Used Chevrolet Camaro
591 Great Deals out of 8,649 listings starting at $4,499
Used Dodge Charger
712 Great Deals out of 23,445 listings starting at $2,750
Used RAM 2500
955 Great Deals out of 47,128 listings starting at $3,900
Used Ford Mustang
924 Great Deals out of 21,384 listings starting at $1,651

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. Content will be removed if CarGurus becomes aware that it violates our policies.