Rough idling

211,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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MICHALE
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  • 8 POSTS
I have rough idling and i have one of my exhaust H pipe missing. i saw flames coming out of the catalytic converter with the missing pipe.
Jul 28, 2019 at 7:05 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good afternoon,

If you have flames in the exhaust, it sounds like a timing issue.

Did you check the firing order of the wires from the cap to the plugs?

I would also check the compression in the motor as well.

https://www.2carpros.com/articles/how-to-test-engine-compression

Roy
Jul 28, 2019 at 7:16 AM
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MICHALE
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  • 8 POSTS
No, I haven't but know I will.
Jul 28, 2019 at 7:21 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Keep me updated.

Roy
Jul 28, 2019 at 7:24 AM
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MICHALE
  • MEMBER
  • 8 POSTS
Well, I changed the spark plugs and 2,4,6,and 8 plugs were coated black 1,3,5,and 7 were not haven't checked the timing yet will do as soon as I get the spark plug wires.
Jul 29, 2019 at 12:48 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Sounds good.

Roy
Jul 29, 2019 at 3:08 PM
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