My 91 Silverado 350tbi miss under load?

Tiny
BAINES48
  • 1991 CHEVROLET SILVERADO
  • 81,000 MILES

Misses under load (truck empty)

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Wednesday, December 7th, 2011 AT 7:37 PM

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Tiny
SATURNTECH9
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Miss under load first thing I would suspect is plugs and wires.

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Wednesday, December 7th, 2011 AT 8:14 PM
Tiny
BAINES48
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Im thinking camshaft. Plugs, wires, rotor have been replaced and distributor cap

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Wednesday, December 7th, 2011 AT 9:32 PM
Tiny
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If it only misses under excelleration I wouldnt suspect a cam shaft that should effect at all different rpms. Usually when it happens under excelleration its a igniton issue. Is it worse with the ac on?Also how about your coil?

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Wednesday, December 7th, 2011 AT 9:48 PM
Tiny
BAINES48
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The truck backfires through throttle body (TBI) when under load. Don't know what to check next? Cam etc.

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Friday, December 9th, 2011 AT 8:47 PM
Tiny
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Have you checked the ignition timing yet?

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Friday, December 9th, 2011 AT 9:35 PM

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