Mechanics

HAVE A BOG DOWN AT TOP SPEED

1996 Chevrolet Tahoe • 155 miles

96 Tahoe 350 engine Have a bog down at top speed. Does not bog down while idling or accelerating. Does not bog down while engine has cruise on. Replaced plugs, wires, cap an rotor an seems now to be better but not fixed?

Replaced plugs, wires, rotor and cap. Chug seems to be a bit worse now. Perhaps misfiring?
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Tiedyetimmy
February 20, 2012.




Have u checked for a clogged exhaust or fuel filter?

Cadieman
Feb 20, 2012.
Exhaust flow seems normal. It only mis fires when at top speed. Not while idle or when accelerating. Wonder if it may be a fuel issue? It seemed to get worse after the plug, wires, rotor an cap were replaced.

Tiny
Tiedyetimmy
Feb 20, 2012.
Hook up a gauge so u can see it while driving to check this
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Cadieman
Feb 20, 2012.

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