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Point Style Ignition....weak fire

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Old Jul 12, 2006 | 07:34 PM
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Chad Garner
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Point Style Ignition....weak fire

I have a 1978 F250 with 400 out of a Galaxie 500. It has points ignition. When I turn the motor over the spark seems very weak. Would this be a sign of a abd condensor or a weak coil?????
 
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Old Jul 12, 2006 | 08:06 PM
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Originally Posted by Chad Garner
I have a 1978 F250 with 400 out of a Galaxie 500. It has points ignition. When I turn the motor over the spark seems very weak. Would this be a sign of a abd condensor or a weak coil?????
Probably the coil, but condenser and points are real cheap, you could try those first. also check the cap and rotor.
 
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Old Jul 12, 2006 | 08:12 PM
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From: Easton,Ks
Make sure you are getting a full 12V from the starter solenoid while cranking and a reduced voltage while running.
 
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Old Jul 12, 2006 | 08:14 PM
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Sorry that I didn't give more info but I have changed the cap, rotor, wires and points. Only reason I didn't change the condensor is the screw is stripped and I don't want to fool with it yet if I don't have to. I do have a full twelve volts off of the solenoid, but I haven't been able to check it with it running yet. I haven't been able to start the engine since all of this started.
 

Last edited by Chad Garner; Jul 12, 2006 at 08:17 PM.
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Old Jul 13, 2006 | 05:46 PM
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Alright I did some more investigating and found out that I need a resistor between my ignition switch and the coil. What ohm rating should this resistor be? Ialso metered across the coil and had 2 ohms across the contacts and could not get a reading from the plug wire receptacle to either contact. I would assume that I have a bad coil due to not having that resistor in. When I removed all the wiring harness I did not know that the resistor wire even existed. If anyone knows what the ohm rating should be please let me know. Thanks in advance
 
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Old Jul 13, 2006 | 05:52 PM
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From: Easton,Ks
Just go to any auto parts store an ask for a Chrysler Ignition Resistor.
 
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Old Jul 17, 2006 | 05:46 PM
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Installed the new coil and the resistor and she took off. Ran a little rough until the lifters pumped up but it seems to be fine. Thanks to all for your help.
 
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