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
2,145

do u actually feel the misfire?

gmclocklin
10

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

John Saffrahn
21,585

Compression test?

Tom Torres
2,145

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

John Saffrahn
21,585

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
9,265

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
21,585

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 138,412 nationwide Silverado 1500 listings starting at $1,500.
ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 califcarson
califcarson
Reputation 940
#2 dandyoun
dandyoun
Reputation 780
#3 tenspeed
tenspeed
Reputation 770
View All

Related Models For Sale

Used GMC Sierra 1500"
668 Great Deals out of 58,196 listings starting at $1,995
Used Ford F-150"
2,083 Great Deals out of 109,837 listings starting at $1,350
Used Dodge Ram Pickup 1500"
562 Great Deals out of 10,890 listings starting at $1,984
Used Chevrolet Silverado 2500HD"
411 Great Deals out of 30,188 listings starting at $2,725
Used Toyota Tundra"
374 Great Deals out of 17,421 listings starting at $2,299
Used Chevrolet Tahoe"
494 Great Deals out of 25,307 listings starting at $1,955
Used Toyota Tacoma"
558 Great Deals out of 25,020 listings starting at $2,598
Used Chevrolet Colorado"
168 Great Deals out of 8,781 listings starting at $2,995
Used Jeep Wrangler"
482 Great Deals out of 43,074 listings starting at $1,800
Used Chevrolet Silverado 1500HD"
10 Great Deals out of 251 listings starting at $4,995
Used Chevrolet Silverado 2500"
10 Great Deals out of 232 listings starting at $4,000
Used Chevrolet Camaro"
481 Great Deals out of 33,891 listings starting at $1,400
Used Chevrolet Avalanche"
237 Great Deals out of 4,853 listings starting at $2,900
Used Ford F-250 Super Duty"
568 Great Deals out of 38,613 listings starting at $2,500

Used Cars For Sale

2015 Chevrolet Silverado 1500 For Sale
145 Great Deals out of 97,190 listings starting at $20,991
2014 Chevrolet Silverado 1500 For Sale
178 Great Deals out of 9,848 listings starting at $16,995
2013 Chevrolet Silverado 1500 For Sale
229 Great Deals out of 6,472 listings starting at $12,950
2012 Chevrolet Silverado 1500 For Sale
161 Great Deals out of 4,621 listings starting at $9,995
2011 Chevrolet Silverado 1500 For Sale
150 Great Deals out of 4,717 listings starting at $8,995