1983 Chev C-10 Pick-up Won't Start - Ignition System

Question: 5.0 litre. After running normal the next day it failed to start. (no spark) I replaced the distributor cap, rotor and coil. Engine started and ran normal for a few minutes then it quit. I pulled distributor, replaced module, and pick-up and also new rotor. Engine started ran normal for a couple of minutes then quit. won't start, no spark. Have power to distributor and all else seems o.k. I have not tried another rotor as yet but if that is the problem, why would it fail? The truck ran for a year are longer with the rotor before the initial trouble.

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Technican: Hi, Check the connections of the wire harness to the distributor cap. Make sure the distributor cap center electrode (button) is not broken. Make sure no wires in the lower distributor harness are broken. Remove the cap with the wires connected. Lay something between the coil electrode and ground. When you crank the engine, it should spark. If not, touch a test light between power and 1 of your pickup terminals. Again you should have spark. If not, get a Delco module and coil. If you have strong spark at coil, then the problem lies in the cap or rotor. Hope this helps,

Owner: it sounds like it attempts to fire when you stop trying to start it, this this a clue.

Owner: There is fire at the coil and the distributor cap is new and looks ok. It appears the rotor is failing. What would cause this?

Technican: Check for a rotor that is not in alignment with the cap (Too short, too low etc) Look on the distributor cap to see where the spark is making its arc for a clue about the alignment. I think there can be a problem by using the wrong screws to bolt the coil to the cap causing the voltage to make a short circuit instead of going through the rotor as it is supposed to. Get a new Delco cap (D336) and rotor (D448)and watch the installation of the coil very closely. If you get a fire out of the coil when you turn the key off, then the problem is between the pickup and the module.

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1983 Chev C-10 Pick-up Won't Start - Ignition System

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