Backfires and oil smells like fuel

1996 CHEVROLET S-10
229,000 MILES • 4.3L • 6 CYL • 4WD • AUTOMATIC
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STEVENCAIN622
  • MEMBER
  • 1 POST
Just got truck and it is sputtering and backfiring. Checked the oil and it smelled like fuel. It is definitely burning rich. Where should I start to correct this issue?
Aug 23, 2018 at 7:47 PM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good morning.

I would start with basics. Change the ignition components. Spark plugs, wires, cap and rotor. Backfiring comes from spark at the wrong time. Most of the time it is related to tune up components.

Is the check engine light on?

If you can, I would also check the fuel pressure.

Roy

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-change-spark-plugs
Aug 24, 2018 at 4:20 AM
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