Electrical problems 1967 427

[Rex T.]

Ok, for all you electrical experts (which I am not). I am trying to get my 67 running......here are the facts.
1. New 427-400 engine (non TI)
2. New wiring harness (everything connected correctly)
3. New battery, new spark plugs, new plug wires., new coil, new ballast resistor, new horn relay. Headlights and horns are not installed yet. Dash harness is original.

Problem........engine wil crank over just fine, but no fire from coil to distributor. I have confirmed that there are 12 volts to the coil and to and from the ballast resistor. When the coil wire is pulled from distributor, there is no spark.

As I said, I am not an electrical expert, so I am asking for suggestions for what to check so I can get this thing going.

As always, thanks in advance for your help. Rex #8089

[John H.]

Re: Electrical problems 1967 427

Have you verified that the points are opening and closing and set the dwell? A test light from the coil (-) terminal to ground should flash when the engine is cranking.

[Rex T.]

Re: Electrical problems 1967 427

John,

The test light remains on while cranking the engine. The light does not flash on and off.

Thanks,
Rex

[John H.]

Re: Electrical problems 1967 427

John,

The test light remains on while cranking the engine. The light does not flash on and off.

Thanks,
Rex

If the test light remains on and doesn't flash on and off, the points aren't opening; either set them at 30* with your dwell meter, or set them at .018" gap when the rubbing block is on a high point of the point cam.

[Rex T.]

Re: Electrical problems 1967 427

With the cap off, i can see that they are opening and closing. Before I installed the distributor, I put it in a vise and set the point gap at .019 just to get them close. Now what?

Thanks,
Rex

[William C.]

Re: Electrical problems 1967 427

With the newest design points, without the screw to attach the wires to the points, it's easy to get the two wires slightly misaligned where they connect to the points and result in no contact there.

[Rex T.]

Re: Electrical problems 1967 427

OK, just now installed new points & condensor, and now the test light fickers on and off as the engine is cranking. Will try disoconnecting the coil wire again to check for a spark.

[Rex T.]

Re: Electrical problems 1967 427

Fire in the hole!! Now I've got a spark from the coil to the cap. Hopefully I can get this beast running this afternoon.

John and bill, do you think it could have been a defective condenser or points?

As always............thanks for you rhelp.

Rex