94 7.3 backfires through tb, replaced map sensor, tps, fuel pump, cap& rotor , wires truck is a 1 ton with 7.3
Nov 16, 2011 at 11:52 PM
wont idle have 2 pump gas pedal 2 keep it running
1994 CHEVROLET SILVERADO
JARET
- MEMBER
- 1 POST
- FOLLOW
Advertisement
sounds like the camshaft has worn out. common on the old engines. soft material and when they wear out, they backfire through the throttle body.
this is assuming your plugs, wires, cap and rotor are all good.
Roy
this is assuming your plugs, wires, cap and rotor are all good.
Roy
Nov 16, 2011 at 11:55 PM
If it comes down to the camshaft best replace the valve lifters too-their partners in crime-they work as a team-same goes with the cap and rotor on conventional ignition system-
Nov 17, 2011 at 12:04 AM
Advertisement