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1926 Model T street rod, 2000 Jaguar XJ8, 1999 Corvette.
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This engine was prone to plug wires being mis routed and shorting on exh. manifolds. With it running spray a mist of water on the wires and see if it develops a miss. Also an over tightened belt will never 'bind" up an engine. Just the opposite, This year of car was noted for the smog pump belt being too loose causing the alternator belt to slip causing weak batteries and misdiagnosed alternator failure! With the engine off, by hand, try to rotate the alternator pulley. If it rotates then the smog pump belt is loose. It must be tightened from under the car. Also a cracked insulator on a spark plug can do this as well. Sometimes holding the brake pedal firmly and slowly adding throttle will produce the miss which helps verify plug wires or cracked spark plug.
 

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1926 Model T street rod, 2000 Jaguar XJ8, 1999 Corvette.
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6,739 Posts
With car running, you should see 13 to 14 volts at the battery terminals. Car off 12.5 to 13 across the terminals. The true test of an alternator is how many amps it produces under load. Load tested, it should be able to produce 50 to 60 amps. A cracked plug wont always show up in the dark.
 

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1926 Model T street rod, 2000 Jaguar XJ8, 1999 Corvette.
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6,739 Posts
Cracked insulators usually happen upon installation. The socket hits the side and cracks it. Again, that reason for the miss is rather remote. Plug wires are very common. Does this miss happen as you are just about to come to a complete stop or as you are sitting still waiting?
 

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1926 Model T street rod, 2000 Jaguar XJ8, 1999 Corvette.
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6,739 Posts
The pipe you refer to simply provides warmer air upon warm up to atomize the fuel and prevent ice forming in the throttle body. Has nothing to do with the "miss". I think you might be describing something out of balance driven by one of the fan belts. Try using the car without the A/C compressor on for a few days to compare.
 
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