I have a '68 GT Convert. with a '69 351W in it. The restoration is almost finished and when I tried to start it up...no luck.

The engine turns over great. I have 10v at the wire that attaches to the coil. when I attach the wire the voltage drops to 4v when measured at the positive coil post. I have tried changing coils with no resultant voltage change. I have also swap Petronix units with no change either. I have tried a starter wire and that brings a full 12v to the coil post, but still no spark at the plug. I again swapped out coils with the stater wire and the results were the same.

Does anyone have any suggestions on what to try next? It is extremely frustrating to be so close to enjoying the Mustang again and have this happen. Also, for what it is worth, it all worked before I took it apart.

Thanks,

Try it with the points instead of the pertronics. Make sure the points contact surface is clean, no corrosion or residue from filing the points. Try the points both with the key igintion wire and then again with the full 12 volt jumper wire from the battery. Something has to give you a spark to the spark plugs!

Distributor must be timed on cylinder #1 and wired to the camshaft's firing order... distributor rotation is counter clockwise-

Cap and rotor must be installed (its overlooked more often than you might think)-

Sounds like you have voltage to the coil, but nothing at the spark plugs...

Do you have spark comming from the coil? The Petronix unit needs a specific gap between the pickup and shaft; have you verified this gap?

------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

12.58/110 on street tires, more to come;)

Actually, no I have not changed anything under the hood since the engine was last running. The first two years I had the car, I concentrated on engine and drivetrain. After that was squared away, I went after body and interior. The car was driven from the trailer to my garage after the body work was done. I have had the main wiring redone by Pat White in Dallas since the car was last started. Even with that change, I still have voltage at the coil from the wire which passes through the main harness and ignition switch.

Craig

As for newbie's mistakes, don't worry, it happed to all of us at one time or another.
Please keep posting!

Rino

quote:

---

Originally posted by Dreamcometrue:
Welcome to M&M, Craig.

As for newbie's mistakes, don't worry, it happed to all of us at one time or another.

---

I don`t know if you can speak for all of us. I personally have never ever made a mistake when working on my cars or somebody else's car. I must be one of the few that has not made mistakes, but what really burns my butt is, when I go back down in the morning to work on my car after a good nights sleep, I find that somebody has gotten into my garage and changed some of the work that has been done and I have to go back over my work again to fix what THEY have messed up. I really think there are gremlins out there that do this or else there are Chebbie people with to much time on their hands that do this

Thanks for making me feel welcome. You all have built a great site and I look forward to being associated with it.