Mine did the same thing when the points were dirty/bad. Replaced points and condensor and engine ran smooth.
Distriburator Questions
Thread Starter
Racer
Joined: Sep 2008
Posts: 403
Likes: 7
From: Space Coast Florida
Distriburator Questions
Ok, the car misfires and jerks when in drive and forum members suggested that the timing was off. My qustions are, how does the timing get thrown off? And what reads other then the posted one would help me do this perferably with pics cuase I don't really know what the physical components look like. Thanks.
Melting Slicks
Joined: Oct 2002
Posts: 2,317
Likes: 111
From: St Louis MO
1. Distributor has changed its rotation - check for a loose hold down bolt.
2. Centrifugal advance has stopped working - advance is now stuck.
3. Vacuum advance is stuck and not working.
4. Electrical wires connecting pole piece sensor in distributor to the ignition module have an intermittent/broken wire which open circuits whenever the vacuum advance changes its position.
5. Ignition coil is bad.
6. Ignition amplifier is bad.
7. Camshaft timing chain has slipped a tooth, retarding timing, BUT this shouldn't cause misfiring and jerking.
Good luck with your troubleshooting.
Le Mans Master
Joined: Jun 2006
Posts: 6,400
Likes: 1,226
From: Tampa Florida
Le Mans Master
Joined: Aug 2006
Posts: 7,427
Likes: 1,560
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
21boy, go to an auto parts store and get a copy of the Haynes Repair Manual for 68 to 82 Corvettes. It will give you a lot of basic information. Enjoy your new ride, PG.
Melting Slicks
Joined: Mar 2006
Posts: 3,456
Likes: 102
From: Piedmont Va
St. Jude Donor '11-'12-'13,'19-'20
If it is an original points distributor with original shaft bushings it is quite possible the shaft play is wreaking havoc on the advance and/or dwell. Ask me how I know.
Thread Starter
Racer
Joined: Sep 2008
Posts: 403
Likes: 7
From: Space Coast Florida
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