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  #1 (permalink)  
Old 09-19-2005, 08:31 AM
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Spark problem

I have a 1976 Chevy 1/2 ton 2WD, 350, Auto. I tried to start it and it would it fired up for a brief moment and quit. It will not restart. I have power to the ditributor and I replaced the module in the distributor. No joy! I took the coil rotor, and cap off of one of my other trucks and tried that. Still no luck. I can't seem to get spark to the plug wires. I have good cranking power. Any thoughts?

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Old 09-19-2005, 12:31 PM
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Did you replace the pick-up in the distributer when you replaced the module? If not then thats probably the culprit.
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Old 09-19-2005, 01:09 PM
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hey Henry!

Thanks for your reply. I'm not sure I kow what you mean by "pick up"
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Old 09-19-2005, 08:00 PM
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It is also possible that the roll pin that hold the drive gear on the bottom of the distributer shaft has sheared. Take the distributer cap off and turn engine over with the starter and see if the rotor turns. If it does not turn or if it turns erratically you have a sheared pin. I sent you a PM.
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Old 09-19-2005, 08:28 PM
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pick up

Doc here,

This is the magnetic pickup....



It is an AC Delco 1907..runs about $18 bucks..and to install it you must pull the dizzy out.

Doc
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Old 09-20-2005, 07:09 AM
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Thanks Guys!

I need all the help I can get
I'm from the old school. Still don't like or know enough about all this electronic stuff. I'm going to persue this pick-up today and I'll let you know what happens.
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Old 09-20-2005, 02:21 PM
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That was it!

I replaced the magnetic pick-up and it fired right up!

I'm no expert, but I'm no stranger to these small block Chevys. I have three pick-ups, all Chevy small blocks and all with electronic ignition. I've owned a total of seven over the years and have always done my own work. I never ran into this magnetic pick-up problem before.

This is what makes this a great website!

Thanks so much for all the help!

Last edited by Trucknut; 09-20-2005 at 02:24 PM. Reason: SPELLING
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Old 09-20-2005, 02:39 PM
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Glad you got it fixed
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Old 09-20-2005, 05:14 PM
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The Fix

Doc here,

Glad to see you post back with the fix! will help the next guy along the road!

And Good Call Henry!

The Magnetic Pickup is second only to modules for no spark failures..unusual that you have never run into it before..It's function as you probably already understand, is to replace the points with a sorta solid state magnetic reed switch which opens and closes as the "stars" pass by the magnetic point..

As you also probably found , for such a small Item,albeit all important, is a PITA to replace as you must pull the dizzy...you'd think they would invent a half clam shell to replace the O.E.M....Hummmm...let me think about that...I see a new product line coming up for my business... Gezze..would you buy one if it was available??

Again, Glad to hear you got the fix in...and something to remember in future..and hopefully it didn't cause you too much to get there..Glad to hear your Rod is Mobile again!

And good call Henry! Us older guys are good for something, ya think?

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Old 09-20-2005, 05:29 PM
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Hi ya Doc, Us old guys have forgotten a lot of stuff too, Lmao. I had to scratch my head a minute or two on this one, LOL. Well anyway, I'm not as good as I once was, but I am as good once as I ever was.
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