Just bought a 98 s-10. check engine light was on. code po300 Changed ignition componets, still had po300 changed injectors, and now still have code po300 & now it backfires from exhaust and missfires

Asked by Feb 08, 2017 at 10:13 PM about the Chevrolet S-10

Question type: Maintenance & Repair

1 Answer

73,125

P0300 CHEVROLET - Cylinder Misfire Detected Random Cylinders.....Possible causes; Faulty spark plug (s), Faulty ignition coil (s), Clogged or faulty fuel injector (s), Intake air leak, Fuel injectors harness is open or shorted, Fuel Injectors circuit poor electrical connection, Ignition coils harness is open or shorted, Ignition coils circuit poor electrical connection, Insufficient cylinders compression, Incorrect fuel pressure...The P0300 code means that a cylinder(s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. If no leak are found the next step is to replace the spark plugs. If the problem persist more tests needs to be done to diagnose problem......Check this video out.....https://youtu.be/QdWd68bVm30

1 of 1 people found this helpful.

Your Answer

Chevrolet S-10 Experts

  • #1
    Andrew Olsen
    Reputation
    2,370
  • #2
    Trebor66
    Reputation
    1,030
  • #3
    John Saffrahn
    Reputation
    1,000
View All

Related Models For Sale

Used Ford Ranger
64 Great Deals out of 341 listings starting at $3,000
Used Chevrolet Colorado
16 Great Deals out of 1,301 listings starting at $1,999
Used Chevrolet Silverado 1500
186 Great Deals out of 10,682 listings starting at $2,500
Used GMC Sonoma
4 listings
Used Toyota Tacoma
34 Great Deals out of 795 listings starting at $5,995
Used Ford F-150
443 Great Deals out of 9,125 listings starting at $3,000
Used Dodge Dakota
16 Great Deals out of 177 listings starting at $1,948
Used Chevrolet Blazer
16 listings starting at $1,750
Used Nissan Frontier
8 Great Deals out of 434 listings starting at $6,450
Used GMC Sierra 1500
236 Great Deals out of 10,481 listings starting at $2,995
Used GMC Canyon
19 Great Deals out of 1,320 listings starting at $1,995
Used Dodge Ram 1500
52 Great Deals out of 531 listings starting at $2,995
Used Chevrolet Camaro
783 listings starting at $12,995
Used Toyota Tundra
24 Great Deals out of 784 listings starting at $3,999

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.