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No Spark at all  Rate Topic 
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 Posted: 10-17-2010 06:56 pm
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jarnol123
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I replaced the crane allison ignition with a pertronix ignitor. I also have a new flame thrower coil.

I still have no spark.  I took the dizzy cap off and left the ignition on and manually cranked the engine. The rotor went all the way around and still no spark.

I checked all the connections and they look fine. I'm confused. Please help!

 

 

 

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 Posted: 10-17-2010 07:36 pm
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jarnol123
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OK I ran a piece of wire from the +ve battery terminal to the Coil to ensure I have 12 V..OK...still no spark when I turn over the engine.....I noticed that there is a black and white wire that goes to the -ve of the coil ...the other end isn't attached to anything ...what should that wire be attached to??

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 Posted: 10-17-2010 08:45 pm
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jarnol123
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Here's some pics of the solenoid and coil..

Attachment: Picture 025.jpg (Downloaded 56 times)

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 Posted: 10-17-2010 08:48 pm
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jarnol123
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BTW: Anyone know what this is?

Attachment: Picture 030.jpg (Downloaded 72 times)

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 Posted: 10-17-2010 08:54 pm
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Jensen Healey
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First of all, did you buy a new rotor?

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 Posted: 10-17-2010 09:00 pm
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jarnol123
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yes

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 Posted: 10-17-2010 09:02 pm
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Jensen Healey
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That thing with the bent contacts is an oil pressure sending unit. It's not stock. The stock setup is a small tube that carries oil all the way to the guage.

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 Posted: 10-17-2010 09:05 pm
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jarnol123
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Ok thanks

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 Posted: 10-17-2010 09:13 pm
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jarnol123
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the coil...

Attachment: Picture 026.jpg (Downloaded 79 times)

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 Posted: 10-17-2010 09:26 pm
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Jensen Healey
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Take the white with slate wire off the negative terminal. It provides 12 volts during cranking coming from the starter. It should connect to the positive side.

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 Posted: 10-17-2010 09:28 pm
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Jensen Healey
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If that wire with the red tape is the hot, connect it directly to the red Pertronix wire.

Edit: sorry, connect both the hot and the red wire to the + side of the coil.

The hot should be coming from the ballast resistor.

Last edited on 10-17-2010 09:42 pm by Jensen Healey

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 Posted: 10-17-2010 09:39 pm
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Jensen Healey
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The Pertronix is just a switch. The hot 12 volts goes through the red Pertronix wire from the hot side of the coil. The magnetic switch in the distributor grounds the black wire (connected to the minus side) to trigger the coil.

Last edited on 10-17-2010 09:43 pm by Jensen Healey

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 Posted: 10-17-2010 10:21 pm
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jarnol123
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OK will try that...btw I don't have a ballast resistor

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 Posted: 10-17-2010 10:58 pm
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jarnol123
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Tried that ...still no hint of a spark anywhere...

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 Posted: 10-17-2010 11:42 pm
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Jensen Healey
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Remove all wires from coil. Find the switched hot wire and put it on the + side. put the red wire from the Pertronix on the + side. Put the black wire from the Pertronix on the minus side.

Check spark from coil. Pull the high tension lead out of the center of the distributor cap and hold near a ground while cranking.  

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 Posted: 10-18-2010 02:13 am
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jarnol123
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I had to pack it up for today but I'll try this tomorrow and report back.

Thanks for all the help.

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 Posted: 10-18-2010 02:15 am
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jarnol123
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When you say "switched" wire..which one is that?

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 Posted: 10-18-2010 02:17 am
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jarnol123
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also when I'm cranking is this a manual crank or not?

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 Posted: 10-18-2010 03:37 am
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Jensen Healey
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The wire from the ignition switch. It's white and goes through the tachometer and then to the ballast resistor.

On some later cars the wire has a built-in resistor and will only put out about 9 volts. What year is your car? Maybe that's why you have no ballast resistor.

Crank the car using the starter.

 

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 Posted: 10-19-2010 02:24 am
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jarnol123
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Mine is a 1975...I'm going to try your suggestions now...will report back

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