Truck is backfiring when trying to accelerate

1995 CHEVROLET TRUCK

284,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC

PADENFD

MEMBER
2 POSTS
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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.

Nov 23, 2019 at 11:55 AM

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JACOBANDNICKOLAS

AUTOMOTIVE REPAIR CONTRIBUTOR
110,190 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

Nov 23, 2019 at 5:52 PM

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.

Nov 24, 2019 at 7:46 AM