Distributer Troubles
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Mountain Pass
Joined: Mar 2014
Posts: 166
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Distributer Troubles
I'm trying to get my truck back on the road and I'm having electrical woes. Here's my situation; 1964 f100 with a 223. After days of 107 degree driveway meter checking, internet researching, hair pulling, I have isolated the problem to the distributer. What is happening is that only three cylinders are firing. The ones that aren't firing are all on one side of the cap. 4, 1, 5. My method of testing was with a timing light. Hook it to 2, 3, 6 and line from coil and I get blinking light. 4, 1, 5 no light. I have two new caps and two new rotors plus new spark plug wires. The newer cap is a blue standard. The two rotors are "made in USA" but not blue and are identical. One of them worked for quite a bit before all this went down. I can't find any play in the distributer body or on the part the rotor goes on. Do I need a matching blue rotor? Do I need to pull the distributer and work on it? I have Pertronix points BTW and a nice, new ground wire in the distributer. I've also checked all the ground wires and they're all cleaned up and making A+ contact. Any ideas? Thanks for any suggestions. I thank the digital universe for this site! Not sure if I would've been able to last this long as an old Ford truck owner without it!
Logistics Pro
Joined: Mar 2005
Posts: 3,771
Likes: 80
From: tujunga, calif
I had a similar situation with my Y block years ago with a Pertronix 1, would only fire on 4 of the 8. I had to change the air gap from .030 to .020 before it would fire on all 8. That told me something was wrong and I replaced it with a Pertronix 11 and never had another issue, none of my other Pertronix equipped cars has ever done that.
I would suggest removing the cap and rotor, turn the engine over with a wrench one cylinder at a time and check the air gap for each cylinder to start with..
What about the plug wires? Have you tried swapping a good cylinder with a bad?
I would suggest removing the cap and rotor, turn the engine over with a wrench one cylinder at a time and check the air gap for each cylinder to start with..
What about the plug wires? Have you tried swapping a good cylinder with a bad?
Mountain Pass
Joined: Nov 2021
Posts: 114
Likes: 24
I'm trying to get my truck back on the road and I'm having electrical woes. Here's my situation; 1964 f100 with a 223. After days of 107 degree driveway meter checking, internet researching, hair pulling, I have isolated the problem to the distributer. What is happening is that only three cylinders are firing. The ones that aren't firing are all on one side of the cap. 4, 1, 5. My method of testing was with a timing light. Hook it to 2, 3, 6 and line from coil and I get blinking light. 4, 1, 5 no light. I have two new caps and two new rotors plus new spark plug wires. The newer cap is a blue standard. The two rotors are "made in USA" but not blue and are identical. One of them worked for quite a bit before all this went down. I can't find any play in the distributer body or on the part the rotor goes on. Do I need a matching blue rotor? Do I need to pull the distributer and work on it? I have Pertronix points BTW and a nice, new ground wire in the distributer. I've also checked all the ground wires and they're all cleaned up and making A+ contact. Any ideas? Thanks for any suggestions. I thank the digital universe for this site! Not sure if I would've been able to last this long as an old Ford truck owner without it!
I have a 64 f100 with a 223. I am trying to figure which igniter 2 I need. Which one are you running which flamethrower II coil?
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