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Truck is backfiring when trying to accelerate

Tiny
PADENFD
  • MEMBER
  • 1995 CHEVROLET TRUCK
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 284,000 MILES
Idles fine. Drives fine, but when you get on the gas demanding power from the motor it bogs down and backfires. Things that have been changed; temperature control sensor, whole TBI rebuild, timing has been checked and is right on. Fuel filter changed, spark plugs, wires, cap and rotor, map sensor, cleaned EGR.
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Saturday, November 23rd, 2019 AT 11:55 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Hi,

Is it backfiring through the exhaust or intake? Take a look through this link and let me know if it helps. Also, let me know from where it backfires.

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

Let me know.

Joe
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Saturday, November 23rd, 2019 AT 5:52 PM
Tiny
PADENFD
  • MEMBER
  • 2 POSTS
Hi Joe,

The backfire to this truck is through the intake and up in the TBI. By your videos I have been watching I am thinking the fuel pump is not doing right. So I’m just going to replace it. Will see what happens. I’ll let you know.
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Sunday, November 24th, 2019 AT 7:46 AM

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