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04-09-2011, 03:39 PM
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Help with spark problem
350 chevrolet computer controlled distributor
I don't think I'm getting any spark with it, I don't know for certain. I didn't feel anything holding one of the plug wires in my hand. I switched distributors (with one that worked last time) and it's the same thing. The engines out of the car. For the ignition wire I have one end clamped to the positive battery terminal and the other to the part labeled "BATT" on the distributor. the wire has 12 volts without crank and 10 volts cranking. I don't understand please help. here's my setup: 
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04-09-2011, 04:35 PM
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You need a jumper from the battery negative to the housing of the dizzy.it has no ground. then be prepared , it WILL make spark.run a seperate gound wire and lay the spark plugs across it with the plug+ wires attached to the cap. Keep it away from the battery at least a couple feet so as not to create an explosion hazard. turn on the battery switch and give her a spin and you will like it.
You can just leave the coil cover off and spin it. The spark will jump to the coil retaining screws without hurting anything, you may get bit so be prepared in case you drop it . I cant count the times a plug wire bit me. It doesnt kill you but it is a suprise and it stings pretty good. Last edited by latech; 04-09-2011 at 04:40 PM.
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04-09-2011, 04:53 PM
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Quote:
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04-09-2011, 04:57 PM
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you can just clamp it to the dizzy housing as that is where it gets its ground from when installed.
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04-09-2011, 05:01 PM
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so i can take off the black jumper cable clamped to the block and just put that on the distributor cap somewhere?
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04-09-2011, 05:29 PM
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Quote:
I am assuming the dizzy is not in the motor?
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04-09-2011, 05:31 PM
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distributor is installed in the motor, sorry probably should have done the picture better. I tried clamping it to the shaft but still still no shocks
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04-09-2011, 05:40 PM
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OK I did not realize it was in the block. It has its ground when it is installed in the block so just put the cable back on the block.
There are two terminals that you have to jump on the computer style ignition module to make it run when unplugged from the rest of the vehicle harness. Give me a minute , I will check to see which ones they are , my thoughts are terminal a + c but let me check to make certain.Be right back.
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04-09-2011, 05:52 PM
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you have the big distributor with the coil in the cap? correct? and a 4 pin connector coming out also? correct?
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04-09-2011, 05:54 PM
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Yes sir that's the one.
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04-09-2011, 06:02 PM
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The distributor 4 pin connector has letters on it. Jumper the A" terminal to the C" terminal and then check for spark. It should have it now.
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04-09-2011, 06:11 PM
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Quote:
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04-09-2011, 06:37 PM
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take a little piece of wire like 16 gauge and strip both ends. Locate pins A and C in the 4 wire connector and poke the wire in the A and C terminals.you know jumper wire.
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04-09-2011, 06:39 PM
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ok i see now thanks, gonna try and do this before the suns down.
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04-09-2011, 06:46 PM
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get-rr - done LOL
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