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.
Saturday, November 23rd, 2019 AT 11:55 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 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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