jeremiahkellam
08-05-2008, 04:08 PM
Here we go...
1994 Mustang GT. Engine is bone stock. This weekend started with a MSD cap and rotor, MSD coil, TFI mod is factory orignal, ford racing plug wires, motorcraft plugs
This past weekend at a track event, the car ran great. Then in the 3rd session, it died instantly on track. Back in pits I discovered the tip broke off of the 5 month old MSD rotor. I had a spare BW (Borg Warner) rotor, so I put that in. Ran great for another 4 laps, same thing again.
Then I put my other extra BW rotor plus a new BW cap. This time it took some effort to get then engine started. Once started it idled fine, I rolled the throttle to it, no prob, then blipped the throttle about 50%, it died. It started back up, but the same thing happened again, it died at about 50% throttle. But this time it would not start again.
Decided to pull distributor. Sounded like a fog horn when turned by hand, bearing going out...
New (autozone) dist. Still nothing. Now I'm thinking bad coil
I cut the end off an old plug wire, connected to coil, and got a spark to ground while cranking. Reconnected coil and pulled a plug out, hooked wire up to loose plug, and no spark when cranking. To further test this, I tried other plug wires and other plugs, as well as tried the cut off plug wire i tested the coil with. Still no spark. I decided the new BW cap and rotor might be faulty, put in a used motorcraft cap and rotor, and still nothing.
So, my question is... If I have juice from coil to cap, why is that I'm not getting a spark to the plug wires???
And to answer a questioned asked by a brainiac on Corner Carvers - yes, the rotor is turning...
1994 Mustang GT. Engine is bone stock. This weekend started with a MSD cap and rotor, MSD coil, TFI mod is factory orignal, ford racing plug wires, motorcraft plugs
This past weekend at a track event, the car ran great. Then in the 3rd session, it died instantly on track. Back in pits I discovered the tip broke off of the 5 month old MSD rotor. I had a spare BW (Borg Warner) rotor, so I put that in. Ran great for another 4 laps, same thing again.
Then I put my other extra BW rotor plus a new BW cap. This time it took some effort to get then engine started. Once started it idled fine, I rolled the throttle to it, no prob, then blipped the throttle about 50%, it died. It started back up, but the same thing happened again, it died at about 50% throttle. But this time it would not start again.
Decided to pull distributor. Sounded like a fog horn when turned by hand, bearing going out...
New (autozone) dist. Still nothing. Now I'm thinking bad coil
I cut the end off an old plug wire, connected to coil, and got a spark to ground while cranking. Reconnected coil and pulled a plug out, hooked wire up to loose plug, and no spark when cranking. To further test this, I tried other plug wires and other plugs, as well as tried the cut off plug wire i tested the coil with. Still no spark. I decided the new BW cap and rotor might be faulty, put in a used motorcraft cap and rotor, and still nothing.
So, my question is... If I have juice from coil to cap, why is that I'm not getting a spark to the plug wires???
And to answer a questioned asked by a brainiac on Corner Carvers - yes, the rotor is turning...