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302 with no spark to coil


Karl Booth
10-08-2006, 08:02 PM
I have a 302 (1970's) in a Ford e300 that I cannot get any spark to the coil. This occurred after I replaced the points, plugs and spark plug wires. Before I replaced the latter when I put the vehichcle in gear it it did not have any power. I assumed it needed a tuneup.

mustangmike351c
10-08-2006, 08:51 PM
make sure you pionts are set to .014 to .016 and check for power to the other side of the coil

Karl Booth
10-08-2006, 09:11 PM
How do you adjust the points? In the old days I use to know how. There is no screw on yje points to adjust. I even put the old points back in and no spark.

mechhound
10-10-2006, 12:46 AM
To adjust the points, you have to position the engine so the rubbing block of the points is exactly on a high spot of one of the eight spots on the distributor cam. Fords of this vintage don't have an adjusting screw, they have a slot that you use a correct size flat blade screwdriver to obtain the correct gap. You need to have the mounting screws slightly loose when making the adjustment. Tighten the mounting screws after gap adjustment and recheck gap. It's also a very good idea to replace the condenser when replacing the points, also he rotor. I'm sure you knew most of what I stated beings you used to adjust points, I just wanted to make it more clear. Good luck.

JustSayGo
10-10-2006, 01:51 AM
The wire that connects the points to the coil flexes every time the breaker plate is advanced. The wire eventually breaks inside the insulation often causing intermittent contact. you may have disturbed the wire enough that it no longer makes contact inside the insulation. Wires can break in less than five years and should be replaced periodicly. Also where you connect the wire and the condenser to the points if either wire clip touches the breaker plate the points are bypassed to a constant ground.
Check for voltage at the + side of the coil with the ignition on.
Alternating voltage on the - side of the coil when the engine is turning.
And touch the ground of the voltmeter or test light to the distributor breaker plate and the other lead to + to prove the breaker plate is grounded.
Check the vacuum advance to see if it will hold vacuum. Not likley that it will.

Karl Booth
10-10-2006, 08:30 PM
Thank You. I will let you know how I make out this weekend

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