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Old Apr 15, 2008 | 11:03 PM
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390 spark

new thread new problem
recently went to a solid state ignition pertronix to be exact and got the flamethrower coil was running with this setup for a month plus than all of the sudden died while at idle

so i replaced cap and rotor again and still no spark to the sparkplugs there is however a spark coming from the coil ive messed with this for hours with no solution i currently have everything as far as the coil and solid state ignition tore off and am going to start fresh in the morning

can any body explain why i am not getting a spark to the spark plugs

oh and to clear up any confusion i took the cap off and used whiteout on each of the eight spark plug wire points in the cap where the rotor makes it spark and there is no sign of a spark jumping or any thing else as far as that goes
 
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Old Apr 15, 2008 | 11:40 PM
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From: Mddl A MexCans
I've seen mention of a resistor wire or module when installing one of these, but cant recall much about it. Search Pertronix you should find tons of info. Hopefully someone will chime in with more or another bit of advice. I run a Crane Xri and it didn't require the resistor scenario.
 
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Old Apr 16, 2008 | 01:14 AM
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How much spark do you have coming from the coil. You need enough spark at the coil to at least jump a 3/8" to 1/2" gap or you just don't have enough spark.
 
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Old Apr 16, 2008 | 01:40 AM
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C0LF-12250-A .. Resistor Wire-Ignition Switch to Coil (Motorcraft DY-37)

61.50"-long / 20 Gauge Wire / Color Coded Pink / 1.30-1.40 ohms resistance.

Fits: All Ford vehicles 1960/72.
 
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Old Apr 16, 2008 | 10:17 AM
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The Pertronix will sometimes have an issue with the resistor wire (voltage to low) and you have to bypass the wire to correct the problem.
 
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Old Apr 16, 2008 | 10:34 AM
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Post 390

where is this resistor wire and how do i bypass it
 
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Old Apr 16, 2008 | 11:44 AM
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The resistor wire is in the wire bundle that runs from the steering column to the ignition coil. It is the pink one and it ain't easy to bypass it. You have to go back toward the ignition switch until you are past the resistor part and splice in a new wire to run to the coil.
 
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Old Apr 16, 2008 | 11:55 AM
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Originally Posted by 400944
where is this resistor wire
Did you notice post #4?
 
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Old Apr 16, 2008 | 12:05 PM
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390 issue

well i got the 69 ford running im a dumb@*! the air gap was off and i think i had a bad ground in the distrib it didnt make sense though it was running before and now than it wasnt so i was leary to suspect anything i havent messed with before none the less its up and running thanks for everybodys help i will throw some feedback outthere later

69 ford f 100
390
352 heads ported with stainless valves
mild cam
performer 390 intake
carter 650 cfm carb
msd
hedman headers
and electric fan setup

and thats why i keep working on it

FORD
 
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