66 big block TI problem?
Thread Starter
1st Gear
Joined: Jun 2009
Posts: 1
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66 big block TI problem?
66 big block with transistor ignition. Compression good, timing correct, getting gas and spark. Will crank and run very lousy with skipping and backfiring for a few revs then quit. Almost acts like a bad vacuum leak but is not. No cracks or carbon tracks in distributor cap. When cranking over, timing light shows consistent spark. Spark is evident when plug is removed and grounded to engine. Could this be a problem with the pulse amplifier or are they either good or bad?
Team Owner
Joined: Oct 2000
Posts: 38,897
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From: Washington Michigan
Melting Slicks
Joined: Apr 2005
Posts: 3,113
Likes: 4
Check out long island-they have the new circuit boards and the new Ti pick up coils. Its a lot cheaper just to replace those two units than to send it off to one of the few rebuilders. I'd start with the amp circuit board as John Z suggested. It is very simple to replace.
Safety Car
Joined: Feb 2003
Posts: 4,068
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From: St. Joseph Mo
The above and; twist, push and pull on the coil while it's running. You may have one that's gone bad. I chased a 'lean cruise miss' for over a year because of a sneaky coil.
Carefull of the high voltage lead, you can get bit.
Carefull of the high voltage lead, you can get bit.
