vehicle backfires while running
Mar 25, 2013 at 7:30 PM
1999 CHEVROLET SUBURBAN
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Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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Some possibilities.
check the egr valve.
Sticking or leaking valves.
valve timing.
Check for vacuum leaks.
How long since a tune-up? Are there any applicable trouble codes?
check the egr valve.
Sticking or leaking valves.
valve timing.
Check for vacuum leaks.
How long since a tune-up? Are there any applicable trouble codes?
Mar 25, 2013 at 8:07 PM
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