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Hesitates on take off and backfires

Tiny
RALPH CHAVARRIA
  • MEMBER
  • 1995 HYUNDAI TRUCK
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 269,843 MILES
New distributor, rotor, wires, cap, plugs, idle air control valve, map sensor, TPS, oxygen sensor, knock sensor, timing set on point. Starts but when I give it gas hesitates on take off and backfires. Help.
Monday, June 17th, 2019 AT 9:08 PM

6 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

I would start by checking the compression. It will tell us if the engine is internally food and if the valve timing is correct.

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

Did you verify the firing order?

https://www.2carpros.com/articles/engine-backfires-while-running

Roy
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Tuesday, June 18th, 2019 AT 2:43 AM
Tiny
RALPH CHAVARRIA
  • MEMBER
  • 4 POSTS
Yes, I did timing checked it five times.
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Wednesday, June 19th, 2019 AT 12:01 AM
Tiny
RALPH CHAVARRIA
  • MEMBER
  • 4 POSTS
I need to get a pressure testing device to check it.
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Wednesday, June 19th, 2019 AT 12:02 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, keep us updated.

Roy
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+1
Wednesday, June 19th, 2019 AT 2:42 AM
Tiny
RALPH CHAVARRIA
  • MEMBER
  • 4 POSTS
Thank you Roy.
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Thursday, June 20th, 2019 AT 2:26 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Roy
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Thursday, June 20th, 2019 AT 3:42 AM

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