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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Nov 2011 Posts: 8 New Guy | | New Guy Joined: Nov 2011 Posts: 8 | Just converted to 12v with problems. New cap and rotor new plugs new points and condenser Before new cap I had no spark at #3. With new cap it changed to #5 no spark. Idles fine but hit the gas and it breaks up bad. Could the dist, be bad? It's original. Correct plug gap and dwell. | | | | | Joined: Jun 2009 Posts: 2,201 Shop Shark | | Shop Shark Joined: Jun 2009 Posts: 2,201 | No new plug wires? Usually a miss is wire or plug related and rarely caused by the other parts you replaced. | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy bgd54, Have you checked the distributor itself, the cam and the bushings? You didn't tell us what you're working on? | | | | | Joined: Nov 2011 Posts: 8 New Guy | | New Guy Joined: Nov 2011 Posts: 8 | Oops sorry. It's a 54 150 stock motor. I have not pulled the distributor out and physically looked at it. I was thinking since it's the stock one that maybe the 12v was to much for it. I don't really know that would do anything but worth a guess | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy bgd54, the distributor will have no problem with the twelve volts. I think you should check for wear in the distributor bushings. If you have access to a dwell meter hook it up and run the engine, worn parts will result in inconsistant readings on the meter, or you could remove the disributor and physically check for wear. | | | | | Joined: Nov 2011 Posts: 8 New Guy | | New Guy Joined: Nov 2011 Posts: 8 | Ok thanks. I'll pull it apart and check it out. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Check the point gap in several positions of the engine. It could be a bent dist shsft.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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