1994 GMC TRUCK 5

  • Tiny
  • Anonymous
  • 1994 GMC Truck
  • 100 miles

1994 gmc truck 5.7, sputters on acceleration-idles fine. New cap, rotor, distributor, plugs, coil, wires, temp sensor, fuel pump. Fuel pressure checks out, relay checks, timing is close, no frayed wires. Egr?

it did this previous to installing new parts. When I finally replaced ignition module in distributor, stopped sputtering, but eventually came back. Just replaced distributor, still does it, but runs much stronger and sounds much better at idle.

Saturday, January 19th, 2013 AT 11:56 PM

1 Reply

  • Tiny
  • hmac300
  • Expert
  • 44,845 posts

Check with choke spray under tbi unit in back they blow gaskets there. If rpm changes it's blown.

Was this
Saturday, January 19th, 2013 AT 11:59 PM

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