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Discussion Starter #1
A friend is running a 99 350 vortec, carb no injection. Using a stock hei distributor and using the factory 99 platinum spark plugs.

he's having an off idle miss and blowing black smoke we have tryed adjusting the carb but dosnt help, could the platinum plugs be the problem? Maybe not enough volts from the stock coil for the platinums?

525 demon
new plugs
new accel wires
new cap and rotor


Any other things needed to run a carb on a 99 vortec
 

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if it was not missing before....i'd check to make sure all the plug wires are in the correct order... I had this happen to me but it was backfiring through the carb.
 
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