Ignition help
Senior User
Joined: Nov 2005
Posts: 137
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I don't understand "12 volts at tip of plug", shouldn't it be like 45,000 volts?
Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
Will it light on starting fluid? If things are sparking and timed right then that means fuel isn't there.
How much have you cranked it? Did the float bowls get filled up? Idle screws adjusted properly?
How much have you cranked it? Did the float bowls get filled up? Idle screws adjusted properly?
Lead Driver
Joined: Aug 2003
Posts: 7,592
Likes: 10
From: **** hole San Jose ca.
After checking every think and still not starting you could try hot wiring the dizzy.
This will by pass your truck running circuit.
Place a small jumper wire from the +side of the battery straight to the +side of coil.
Then try starting it the ign key.
Now to kill the motor remove hot wire from battery.
The Solenoid should have 2 small wires one on each little terminal.
Those small terminal are marked with a (I)=ign & (S)starter these can be checked with a volt meter the (S)only gets voltage when ign. key turned to start is these get put on the wrong one it won't crank and could damage the solenoid.
Orich
This will by pass your truck running circuit.
Place a small jumper wire from the +side of the battery straight to the +side of coil.
Then try starting it the ign key.
Now to kill the motor remove hot wire from battery.
The Solenoid should have 2 small wires one on each little terminal.
Those small terminal are marked with a (I)=ign & (S)starter these can be checked with a volt meter the (S)only gets voltage when ign. key turned to start is these get put on the wrong one it won't crank and could damage the solenoid.
Orich
Senior User
Joined: Jul 2010
Posts: 239
Likes: 0
72CS, unless someone converted your truck to electronic ignition, it will have points. An easy way to tell would be to look at the small wire(s) coming out of the side of the distributor housing. If there is only one wire coming out of the distributor and it is connected to the Negative (-) terminal of the coil, you have a points distributor. An electronic distributor, Ford or aftermarket with the possible exception of a GM style HEI dizzy, would have more than one wire coming out of it.
Thread Starter
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New User
Joined: May 2014
Posts: 8
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Thanks for all the help everyone! Once I replaced dizzy and buddy worked throttle while I turned ignition, she fired up, carb needs tuning.... Leak at the water pump, come to find out a bolt I forgot to put into new manifold was the culprit. Took water pump off to get bolt in and hose on. Did that, found a leak in the thermostat housing... Fixed that, now a leak in the water pump gasket, fixed that and manifold gaskets leaking. Now going to tear back into it and just do a cammy with it.
Thanks again for all who gave advice! It was greatly appreciated!
Thanks again for all who gave advice! It was greatly appreciated!
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Lead Driver
Joined: Aug 2003
Posts: 7,592
Likes: 10
From: **** hole San Jose ca.
When new to engine wrenching work one finds many little thing that ya think don't matter until you add coolant or try starting it.
Then with a flood of leaks and vehicle won't start due to backfiring..
Is A Common problem.
Once repeated work is done one learns what not to do!
g
Well glad you got it running so now you can pull it down and fix it right.
Now take your time.~~~ If your going add a cam to it don't get crazy with it or you'll have more headache trying to get to run right..
Orich
Then with a flood of leaks and vehicle won't start due to backfiring..
Is A Common problem.
Once repeated work is done one learns what not to do!
g Well glad you got it running so now you can pull it down and fix it right.
Now take your time.~~~ If your going add a cam to it don't get crazy with it or you'll have more headache trying to get to run right..
Orich
Senior User
Joined: Jul 2014
Posts: 280
Likes: 1
From: pine city washington
ign help
try disconnecting the wires to the coil and run 12v to the positive side hook a spark plug to the coil wire and scratch the negetive post on the coil to ground if no spark =bad coil.
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