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Pertronix Distributor Help!!!  Rating:  Rating
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 Posted: 04-27-2007 08:00 pm
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flatlanderep
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I'm stumped right now...................thats all I gotta say.

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 Posted: 04-27-2007 08:52 pm
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Jensen Healey
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How well did your car run before you started this process?

Have you double checked the cam timing marks line up when at TDC?

Remove the distributor cap and look inside with a bright light. If there are any marks on the inside that look like pencil dots or small fern like shapes you have tracking which lets most of your spark go to ground. It's very hard to see carbon on black so look carefully.

Kurt

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 Posted: 04-27-2007 09:02 pm
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flatlanderep
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Car ran smooth before all this.

I've checked a million times with the cams lining up at TDC. And they do.

What would the solution to tracking be? I'll check it out.

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 Posted: 04-27-2007 09:54 pm
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Mark Rosenbaum
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Firing order is 1-3-4-2.  The rotor moves COUNTER-clockwise (CCW) when viewing from dist. cap end of the distributor.  Your first photo, if correctly annotated, indicates that you've got the distributor wired incorrectly.
  • You show wire for #1 at the 6:00 position in your photo.  This is our starting point.
  • Moving CCW when viewing from cap end of distributor, the wire at the 3:00 position in the photo is marked as going to #2, should go to #3.
  • Moving CCW when viewing from cap end of distributor, the wire at the 12:00 position in the photo is marked as going to #4 at high side.  This is good.
  • Moving CCW when viewing from cap end of distributor, the wire at the 9:00 position in the photo is marked as going to #3, should go to #2.
In other words, exchange the wires going to cylinders #2 and #3, and the engine should run normally.  Then, if the engine misses or seems underpowered at higher rpm's, reset the plug gap to 0.025".

Note that the proper position for the #1 plug turret depends on the orientation of the distributor gear at the front of the engine -- if that gear is oriented differently, the #1 plug turret will be in a location other than 6:00.  The precise orientation does not matter provided the timing is set correctly and the plugs are hooked up in the proper order.

Last edited on 04-27-2007 09:55 pm by Mark Rosenbaum

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 Posted: 04-27-2007 10:23 pm
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John Kimbrough
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Mark, thanks for persisting with your advice.  When I saw the distributor cap and wiring I thought something was wrong and was going to go to the garage to check my connections.  Then I realized my JH was in Vancouver, Washington in storage, and I am still in Delaware.  Not able to help from here. 

Just wanted to let you know we all appreciate your unfailing advice on perplexing issues. 

John.

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 Posted: 04-27-2007 11:01 pm
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Mark Rosenbaum
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Thanks, John, you're very kind.  I've made it one of my missions in life to ensure the spread of good accurate information about the JH, and thanks to Greg Fletcher and the JHPS membership, and the fine folks on the Jensen Mail List, I've been able to do that rather efficiently.  Of course, I am wrong occasionally -- some might say, rather frequently -- but I hope and expect to be corrected whenever that occurs.

 

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 Posted: 04-27-2007 11:46 pm
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flatlanderep
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John,

You saved my sanity.
Needless to say the car is running great after switching 2 and 3.
THat never crossed my mind.

I appreciate all the help!

Thanks,

Paul

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 Posted: 04-28-2007 07:50 pm
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John Finch
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Paul, congratulations and enjoy the ride! JHPS is a great organization. I know my JH sure runs better thanks to the fine folks sharing their knowledge and experience.

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