Starter Trouble shooting Ideas
had the starter tested for a second time....tested good. so now i'm gonna check all the wiring and make sure there isn't any corrosion on the wires and it's getting a good solid ground. wish me luck...
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You may find these test helpful, with a minimum amount of work:
1. To eliminate suspect ignition switch and related wiring; Using a dead man starting switch / cable tester (a push button switch, two wire with insulated spring clips) remove small gage wire from starter solenoid "S" terminal; connect one spring clip there and other to hot / battery cable side of the solenoid. i.e. same method used in the old days when you would crank the engine over when you adjusted the points gap in the distributor. If the starter cranks, then your problem is in the ignition switch or related wiring.
2. If starter still doesn't crank, then problem can be the solenoid, or starter or one or both of the battery cables or their respective frame connection / ground or connection on the solenoid. You can by-pass the starter solenoid by jumpering / shorting (momentarily) across the two large terminal posts on the solenoid. The starter motor should run, but will not engage to the fly wheel, since the solenoid is not energized.
***** Warning **** you only want to short across these two posts, just long enough to hear the starter spin!!!! Since the starter motor is series wound, it will over speed quickly and can damage it's self. Note: some starters may still engage the fly wheel, so be sure to maintain a safe distance from any moving engine belts / pulleys / accessories.
3. Other installation check points that can cause a non-functional starter are:
A. Insure starter / engine mounting surfaces are clean & tight. You need a good metal to metal (ground)connection.
B. Check all cables, their terminal ends & attachment points are clean, tight, free of damage / not burned or look heated, or corroded. If the cables are very stiff, or have damage / split insulation; these are warning signs, that the cable(s) S/B replaced.
There are additional electrical tests, we can do if you have a meter and are interested!
Best of luck!!