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75 dart starting problems no spark,,Help
https://slantsix.org/forum/viewtopic.php?t=13320
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Author:  junkman454 [ Thu Jun 09, 2005 8:26 pm ]
Post subject:  75 dart starting problems no spark,,Help

Just saved this one from the crusher very clean- never had a dodge before, it ran but stopped running.
im not getting any spark, changed coil,cap rotor,ign. switch and ballast. i have 8vdc on the coil when cranking. is there a particular way to test ballast and install( i hooked up as it was in the car with the jumper on the non notched edge. or maybe the pepboys cap is no good, and it does have a resistor on the coil, coil wire ohms out good, any suggestion would be appreciated
thanks Don Nj
junkman454@hotmail.com

Author:  makapipi [ Fri Jun 10, 2005 12:58 am ]
Post subject:  no starting

how about the ignition module , it is mounted on driver side in engine
bay

Author:  junkman454 [ Fri Jun 10, 2005 3:34 am ]
Post subject: 

ignition module also changed

Author:  makapipi [ Fri Jun 10, 2005 12:55 pm ]
Post subject:  no spark

how about the pickup coil in the distributor? when the rotor shaft spinning
there should be about .1 to .4 volts ac on the 2 wires. also the resistance
of that pckup coil should be around 150 to 800 ohms.
that pickup coil has a connector about 6 inches from the distributor.

the p up coil sends a pulse signal to the ignition module which sends the
pulse to the coil , than the ign coil increases the spark voltage and sends
it to the spark wires and spark plug.

Author:  '74 Sport [ Fri Jun 10, 2005 1:26 pm ]
Post subject: 

How old are the ignition wires? If the coil wire has broken down inside its sheath, it may not carry the current to your distributor.

Author:  Jon Dahlberg [ Fri Jun 10, 2005 2:28 pm ]
Post subject: 

Check the fusible links by the ballast resistor too.

Author:  Super6 [ Fri Jun 10, 2005 5:00 pm ]
Post subject: 

You should have battery voltage (or very near it) at the coil + terminal while cranking---the ballast resistor is (should be!) bypassed during cranking.

Once the key is let off "start" to "run", current is routed through a second ignition wire, that runs through the ballast resistor, which should drop the voltage to ~8 volts.

Electronic Ignition Wiring Diagram

-S/6

Author:  junkman454 [ Fri Jun 10, 2005 8:34 pm ]
Post subject: 

ill check all suggestions on sunday, with chucks wiring diagram and my trusty meter i hope the old girl starts., i have my fingers crossed.

Author:  junkman454 [ Wed Jun 15, 2005 7:06 pm ]
Post subject: 

i have good spark now, replaced the distributor ignition pickup, But engine floods out real fast, guess im out for a carb rebuild

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