What is the proper sparkplug gap?

15

Asked by Mar 16, 2013 at 10:07 AM about the 2001 GMC Jimmy 4 Dr SLE 4WD SUV

Question type: Maintenance & Repair

My Haynes manual and various places I've seen online say the gap is .045 inches. On the other hand, NAPA online, some other places, and the engine sticker say it's .060 inches. This makes me 99% sure it's .060 inches. If I'm right, this begs the question as to what else the Haynes manual has wrong.

Thanks in advance.

5 Answers

97,005

.060 is correct.

11 of 11 people found this helpful.
Best Answer

Be very careful gaping them, if it is even necessary, the center electrode is very easy to break with iridium plugs

1 of 1 people found this helpful.
99,195

I checked RockAuto.com and it showed many plugs were .060. Some said not to gap and a couple said .040 (Denso). It could be that different makes of plugs require different gaps but I would go with the majority and buy plugs that were factory gapped at .060.

2 of 2 people found this helpful.
20,825

40 60 take your pick ,it will light them up ,I know im unorthodox but were not setting up for the nationals now and its maby the first replacement in 12 years, as they burn away they get bigger so @ 40 good for a long time and smoother idle . okulll!

1 of 1 people found this helpful.
68,655

Go with the engine sticker. .060 is pretty standard these days. HTH. -Jim

3 of 3 people found this helpful.

Your Answer

Add photo

Related Questions

Jimmy

Looking for a Used Jimmy in your area?

CarGurus has 285 nationwide Jimmy listings and the tools to find you a great deal.

ZIP:

Search GMC Jimmy Questions

GMC Jimmy Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 280
#2 tennisshoes
tennisshoes
Reputation 260
#3 1oldman
1oldman
Reputation 240
View All

Related Models For Sale

Used Chevrolet Blazer
1,168 listings starting at $1,495
Used GMC Sierra 1500
774 Great Deals out of 68,507 listings starting at $1,800
Used Chevrolet S-10
7 Great Deals out of 1,334 listings starting at $1,999
Used Chevrolet Tahoe
581 Great Deals out of 32,919 listings starting at $1,500
Used Toyota 4Runner
228 Great Deals out of 19,349 listings starting at $1,500
Used Jeep Wrangler
264 Great Deals out of 15,849 listings starting at $3,200
Used GMC Yukon
405 Great Deals out of 20,427 listings starting at $1,495
Used Chevrolet TrailBlazer
85 Great Deals out of 4,689 listings starting at $999
Used GMC Envoy
50 Great Deals out of 2,194 listings starting at $2,200
Used Kia Sedona
116 Great Deals out of 8,164 listings starting at $1,500
Used Ford Explorer
890 Great Deals out of 64,216 listings starting at $799
Used Chevrolet Suburban
279 Great Deals out of 19,272 listings starting at $1,999
Used GMC Sonoma
5 Great Deals out of 429 listings starting at $1,488

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.