What's causing it 2 backfire

Asked by Kelly Dec 12, 2020 at 03:38 PM about the 1997 GMC Suburban C1500

Question type: Maintenance & Repair

97 GMC suburban 1500 2wd
It's backfiring very bad and the smell of fuel is so
rich it burns ur eyes..
I've replaced camshaft position sensor... Spark
plugs... Distributor cap and button... And cleaned
out Mass air flow sensor.... The problem only gets
worse

3,055

JRKMotorZ answered 3 years ago

Is your cam correlation at -2 to 2 degrees on your distributor? Do you have a CEL light to check codes? Also sometimes the spider injection system goes bad on these. Here's a part number ac delco 217-3029 for the 5.7 v8. There are other brands that are similar but make sure you verify your fuel trims are decent as well. Anything below -10% on fuel trims is a rich condition which you could be experiencing.

Mark helpful

Your Answer:

Own this car?

Share your experience with others.

1997 GMC Suburban

Write a car review

Review another car

Used Chevrolet Suburban

661 Great Deals out of 13,233 listings starting at $2,588

Used GMC Yukon

668 Great Deals out of 11,725 listings starting at $1,499

Used Chevrolet Tahoe

1,107 Great Deals out of 21,888 listings starting at $1,000

Used Ford F-250

226 listings starting at $7,495

Used Ford F-150

6,200 Great Deals out of 135,034 listings starting at $900

Used Dodge RAM 1500

84 Great Deals out of 1,593 listings starting at $995

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. Content will be removed if CarGurus becomes aware that it violates our policies.

What's causing it 2 backfire

1 Answer

Your Answer:

Own this car?

Share your experience with others.

Shortcuts

Search GMC Suburban Questions

CarGurus Experts

Know more, shop wisely

Related Models For Sale

Used Cars For Sale

What's causing it 2 backfire

1 Answer

Your Answer:

Related Questions