Hope this ignition module will work
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
But, B7A-12106-A was used in 1974 with or without DuraSpark, which means that 1975/76 not only used a different cap, but different plug wires as well.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
Google says the 1261 should fit your truck.
If it's a regular miss, though, it is most likely further down the ignition line than the distributor. It is more likely a bad cap, wire, or spark plug if a compression test shows them all to be even.
I have installed Pertronix ignitors before with stock coils, I just go back under the dash and tap into the pink wire as close as I can get to the ignition plug. That wire is a resistor, and it takes the whole length from the plug to the firewall to drop the voltage to 7v. Close to the ignition plug it's not much of a drop at all.
If it's a regular miss, though, it is most likely further down the ignition line than the distributor. It is more likely a bad cap, wire, or spark plug if a compression test shows them all to be even.
I have installed Pertronix ignitors before with stock coils, I just go back under the dash and tap into the pink wire as close as I can get to the ignition plug. That wire is a resistor, and it takes the whole length from the plug to the firewall to drop the voltage to 7v. Close to the ignition plug it's not much of a drop at all.
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Cargo Master
Joined: Mar 2014
Posts: 2,031
Likes: 72
Installed the 1261 module today. Talk about an idiot. Got it wired. It cranked and cranked but no start. Seems you need the rotor as well. Such a dunce. Started right up. No change in performance as most predicted. But I was too tired to start further troubleshooting:
1. Clean out fuel lines;
2. check fuel filter;
3. check fuel flow;
4. compression tests.
1. Clean out fuel lines;
2. check fuel filter;
3. check fuel flow;
4. compression tests.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
Installed the 1261 module today. Talk about an idiot. Got it wired. It cranked and cranked but no start. Seems you need the rotor as well. Such a dunce. Started right up. No change in performance as most predicted. But I was too tired to start further troubleshooting:
1. Clean out fuel lines;
2. check fuel filter;
3. check fuel flow;
4. compression tests.
1. Clean out fuel lines;
2. check fuel filter;
3. check fuel flow;
4. compression tests.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
And throttle open.
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Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
And all spark plugs removed, run test at least twice, take highest reading, charge battery up between tests, etc. the idea is a standard, accurate test. In my old Motors manual, compression testing is on page 2. They point out if the engine is trashed there's no reason to investigate further or throw parts at it.
For all that, if an engine will run, a vacuum gage is a heck of a lot easier and good compression can be inferred pretty well from a normal reading.
For all that, if an engine will run, a vacuum gage is a heck of a lot easier and good compression can be inferred pretty well from a normal reading.
Lead Driver
Joined: Aug 2003
Posts: 7,592
Likes: 10
From: **** hole San Jose ca.
If all your spark plug have a light tan and all look like this that's a pretty good indication It's still in pretty good condition.
If one or more cylinders are oily could be a bad intake manifold gasket if it's by these cylinders 3&4 or 6&7. and or bad valve guilds sucking oil.
If flat black carbon build up then may have a burnt valve seat.
Any of these conditions which can all be corrected with out pulling the motor.
Orich
If one or more cylinders are oily could be a bad intake manifold gasket if it's by these cylinders 3&4 or 6&7. and or bad valve guilds sucking oil.
If flat black carbon build up then may have a burnt valve seat.
Any of these conditions which can all be corrected with out pulling the motor.
Orich
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