Guest ed@augbur.com Posted September 2, 2003 Share Posted September 2, 2003 I have a 49 super and replaced the main wiring harness. It started and ran fine until recently when it cranked very hard, if at all. I replaced the battery. Same result. I had the starter checked and was told it was also good, as well as the solenoid. I checked all my connections. Same problem. I think I have a short somewhere, because when I turn the key to on, my amp gauge shows a draw. When I replaced my main harness, I did'nt replace the ignition harness because it was so easy to manufacture one. And I think I did it correctly because I had no problem with starting for months. Any thoughts from anyone? Thanks ed-49 Buick 56c Link to comment Share on other sites More sharing options...
Guest Chuck Conrad Posted September 3, 2003 Share Posted September 3, 2003 If the points are closed, the ammeter will show a discharge condition so that reading may be normal. More likely, you suffer from poor grounding. Is the engine securely grounded to the frame? The motor mounts are not good conductors. There should be a ground strap or a heavy ground return wire from the engine to the frame. The starter draws a lot of current, even the slightest resistance in the circuit will cause the problems you describe. Even paint or rust around the bonding straps can cause big problems. In fact, if you have enough paint on the starter where it connects to the engine, the paint can sometimes make enough resistance to cause the motor turn slowly. Paint does not conduct electricity. Also check to make sure the battery cables are sufficient size. 12-volt style cables are too small for a 6-volt system. 2/0 battery cables are a must for 6-volt cars if you want them to start. Also check any and all connections in the starter circuit to see if they get hot when the engine is cranked. Be careful though, you can really burn yourself when you find the bad connection. It will be extremely hot. Sometimes, even a connection that visually appears to be perfect will develop some resistance; so this is a good time to double check all connections. Happy hunting. <img src="http://www.aaca.org/ubbthreads/images/graemlins/crazy.gif" alt="" /> Link to comment Share on other sites More sharing options...
edinmass Posted September 4, 2003 Share Posted September 4, 2003 Chuck IS correct. Link to comment Share on other sites More sharing options...
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