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Discussion Starter · #1 ·
Hi guys,

I am in the process of getting my 'Duster back on the road again and I have an issue with a lack of spark. I had the truck running last week while doing some work around and it suddenly stopped. When I tryed to re-fire it I found I had no spark.

So today I replaced the igition control unit and I recently replaced the ballast resistor from a tip last winter(when again it had no spark). That time the ballast resistor fixed it. Now I am lost.

The symptoms are it will turnover fine and when I turn back the key it fires for a split second and that is the only spark I get.

Thank you guys for your help! I need the truck back in three weeks for my girlfriends senior prom. ;)

Bill
 

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have u checked ur distributor? if theres water in it it wont let it spark, if there is water some wd 40 works great to remove it
 

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Check for 12 volts on the pink wire at the + terminal on the coil during "start". Then check the same terminal during "run" for 8 to 12 volts and get back to us. Also check the red wires a the ballast resistor for 12 volts with the key in the "run" position.
 

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Discussion Starter · #4 ·
Hi Chump,

I tested as you said and only got 8.5 volts during start on the positive side of the coil and 6.5 volt at the run position. The ballast resistor read 11 volts at the run position. Could it be that the coil simply is bad? I hope so seeing its a cheap part!

Thanks for your help! I need it.

Bill
 

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I had the same problem with my RC. Crank over and you get slight kick as you turn the off. All I did was pull the cap and rotor, sand the reluctor blades with some real light sand paper, and adjust the pickup coil. Not saying that you don't still have a bad part.


corey
 

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coreyhaight said:
I had the same problem with my RC. Crank over and you get slight kick as you turn the off. All I did was pull the cap and rotor, sand the reluctor blades with some real light sand paper, and adjust the pickup coil. Not saying that you don't still have a bad part.

corey
Bill, the voltages are a little low but that may be from not having a fully charged battery after cranking it for awhile...the low voltages should NOT cause a complete loss of spark. Do as Corey suggests but first take an Ohms reading of the pickup asm inside the distributor. There should be a 2 wire plug coming off the distributor, disconnect the plug and take and ohms reading across the two wires from the distributor...you should have 150 to 900 ohms. If this pickup is bad you will get NO spark. Also make sure the the control unit you replaced is properly grounded...it gets its ground through the case mounting bolts and the fender.
 

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Discussion Starter · #7 ·
Chump,

I tested the pick up as you discribed and as the book said and I got 0 ohm's every time. Guess I have to replace it now. everything else tests out fine. Thanks for your help!

Bill
 
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