I am getting a misfire code on 1 and 2 cyl.

gmclocklin
10

Asked by gmclocklin Oct 22, 2012 at 10:22 AM about the 2003 Chevrolet Silverado 1500 LS Short Bed 2WD

Question type: Maintenance & Repair

I have replaced the cap,button, wires, plugs, injectors (the whole spider), both top O2 censors and a couple other items I can't remember what they are called one on the side of the dist, the other was vac related. 4.3 V6

9 Answers

Tom Torres
2,125

do u actually feel the misfire?

gmclocklin
10

barley at idle. it smooths out over 3-4k rpm.

John Saffrahn
20,995

Compression test?

Tom Torres
2,125

id check compression on these cylinders and at least one good cylinder and compare the two

John Saffrahn
20,995

My cousins neon has a dead cylinder #1 it only has 30-35 psi wet or dry doesn't matter. It smooths out around 2500.

1 out of 1 people think this is helpful.
Andrew Olsen
8,825

yes, a dead cylinder or multiple will smooth out with more rpms. The more cylinders the less you notice a miss and easier it will be covered up by reving. Buddy of mine has a honda with 2 and 4 missing, cant feel much at 4000. Idle is horrible tho... Have a compression test done dry then wet and post results. Have a feeling this will tell you your problem.

gmclocklin
10

Cyl 1 & 2 have plenty of compression, 160 psi with very little differance between the two. I reset the spark plug gap, .040, I saw on another sight some one with the same problem found the gear on his distributor was worn and it cleared up after replacing it.

1 out of 1 people think this is helpful.
John Saffrahn
20,995

The gear is usually just pot metal so that is understandable. Make sure you have a timing light and unplug the electronic adjustment to set the new one correctly.

gmclocklin
10

Will do thanks for the info.

Your Answer

Add photo

Related Questions

Silverado 1500
Looking for a Used Silverado 1500 in your area?
CarGurus has 141,001 nationwide Silverado 1500 listings starting at $1,500.
ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 califcarson
califcarson
Reputation 870
#2 tenspeed
tenspeed
Reputation 770
#3 dandyoun
dandyoun
Reputation 760
View All

Related Models For Sale

Used GMC Sierra 1500"
783 Great Deals out of 55,405 listings starting at $975
Used Ford F-150"
2,342 Great Deals out of 97,506 listings starting at $1,499
Used Dodge Ram Pickup 1500"
588 Great Deals out of 10,963 listings starting at $1,990
Used Chevrolet Silverado 2500HD"
404 Great Deals out of 30,671 listings starting at $3,495
Used Toyota Tundra"
459 Great Deals out of 17,697 listings starting at $2,499
Used Chevrolet Tahoe"
695 Great Deals out of 23,947 listings starting at $1,955
Used Toyota Tacoma"
625 Great Deals out of 24,046 listings starting at $1,895
Used Chevrolet Colorado"
241 Great Deals out of 7,826 listings starting at $2,295
Used Jeep Wrangler"
728 Great Deals out of 45,948 listings starting at $1,800
Used Chevrolet Silverado 1500HD"
9 Great Deals out of 229 listings starting at $5,698
Used Chevrolet Silverado 2500"
11 Great Deals out of 237 listings starting at $4,000
Used Chevrolet Camaro"
486 Great Deals out of 34,164 listings starting at $1,595
Used Chevrolet Avalanche"
266 Great Deals out of 4,936 listings starting at $3,900
Used Ford Mustang"
668 Great Deals out of 33,496 listings starting at $1,950

Used Cars For Sale

2015 Chevrolet Silverado 1500 For Sale
124 Great Deals out of 97,483 listings starting at $21,897
2014 Chevrolet Silverado 1500 For Sale
261 Great Deals out of 11,928 listings starting at $16,991
2013 Chevrolet Silverado 1500 For Sale
229 Great Deals out of 6,381 listings starting at $13,697
2012 Chevrolet Silverado 1500 For Sale
187 Great Deals out of 4,782 listings starting at $10,252
2011 Chevrolet Silverado 1500 For Sale
185 Great Deals out of 4,854 listings starting at $8,990