Number 4 cylinder misfire

Asked by Apr 15, 2018 at 06:32 PM about the Chevrolet Silverado 1500

Question type: Maintenance & Repair

Could anyone tell me what could cause my engine
to miss under a load or at mid rpm range around
3000rpm or above followed with massive power
loss a few seconds into it ?
it throws a #4 cylinder misfire code p0304 .
I've give it complete tune up plugs,wires,distributor,
distributor cap,rotor button, changed maf sensor
,maintains 50psi fuel pressure while driving
,checked compression it seemed to be fine also at
around 150psi

1 Answer

121,365

Dirty injector, possible intake leak on that cylinder, valves not opening fully, engine control not firing number 4 intermittent, going to need some shop to at a minimum do a scope check and go from there.

Your Answer:

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    3,550
  • #2
    Rowefast
    Reputation
    2,580
  • #3
    Andrew Olsen
    Reputation
    2,410
View All

Related Models For Sale

Used GMC Sierra 1500
84 Great Deals out of 10,356 listings starting at $2,495
Used Ford F-150
130 Great Deals out of 11,421 listings starting at $399
Used Chevrolet Silverado 2500HD
11 Great Deals out of 1,109 listings starting at $4,495
Used Ram 1500
263 Great Deals out of 28,403 listings starting at $9,500
Used Dodge Ram 1500
24 Great Deals out of 534 listings starting at $4,995
Used Toyota Tundra
27 Great Deals out of 1,531 listings starting at $4,500
Used Toyota Tacoma
13 Great Deals out of 1,754 listings starting at $6,413
Used Chevrolet Tahoe
10 Great Deals out of 778 listings starting at $5,900
Used Chevrolet Colorado
13 Great Deals out of 2,296 listings starting at $3,995
Used GMC Sierra 2500HD
5 Great Deals out of 1,763 listings starting at $3,800
Used Ford F-250 Super Duty
18 Great Deals out of 809 listings starting at $1,500
Used Chevrolet Camaro
9 Great Deals out of 946 listings starting at $11,500
Used Ford Mustang
35 Great Deals out of 1,236 listings starting at $3,995
Used Ram 2500
28 Great Deals out of 1,633 listings starting at $9,000
Used Chevrolet Silverado 2500
3 listings starting at $8,900

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.