Cylinder 5 miss fire 99 chevy 5.7

Asked by Feb 06, 2017 at 01:41 AM about the 1999 Chevrolet C/K 1500 LS Extended Cab 4WD

Question type: Maintenance & Repair

Have a 99 chevy 1500 5.7 started out with check
engine going on but then it would go off pretty
quick then it started flashing took it to auto zone
said number 5 cylinder is miss firing changed plugs
and wires like they said and nothing happened now
I have to give it gas to start and it's running really
ruff it makes a popping noise and smells really rich
and goes through gas like no other. Any
suggestions on what else it could be before I spend
a bunch of money replacing everything? Please
help

1 Answer

76,335

Check the compression in the cylinders comparing them to number 5 cylinder, check for vacuum leaks, snug up the intake manifold bolts, check for proper fuel pressure. Other things to eliminate are, Faulty spark plug 5, Clogged or faulty fuel injector 5, Faulty ignition coil 5, Fuel injector 5 harness is open or shorted, Fuel injector 5 circuit poor electrical connection, Ignition coil 5 harness is open or shorted, Ignition coil 5 circuit poor electrical connection.

Your Answer

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    3,840
  • #2
    John Saffrahn
    Reputation
    2,650
  • #3
    Rowefast
    Reputation
    2,210
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,746 Great Deals out of 175,327 listings starting at $955
Used GMC Sierra 1500
1,227 Great Deals out of 64,900 listings starting at $999
Used Ford F-150
3,307 Great Deals out of 224,483 listings starting at $1,200
Used Chevrolet C/K 2500
208 listings starting at $2,995
Used Dodge Ram 1500
412 Great Deals out of 11,096 listings starting at $1,500
Used Chevrolet Tahoe
828 Great Deals out of 42,144 listings starting at $1,987
Used Chevrolet Camaro
444 Great Deals out of 31,892 listings starting at $1,450
Used Chevrolet C/K 3500
214 listings starting at $3,199
Used Chevrolet S-10
13 Great Deals out of 1,202 listings starting at $1,600
Used Toyota Tacoma
722 Great Deals out of 45,870 listings starting at $2,500
Used Chevrolet Silverado 2500
9 Great Deals out of 231 listings starting at $3,995

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.