72 Satellite
Well-Known Member
2 days ago I'm cruising along and suddenly the engine dies. The first couple attempts at restart produced very weak and short firing. After that, no firing what so ever.
Troubleshooting results so far
-Battery (Redtop New) 12.6 V
-Alternator (Tuff Stuff 130 amp New) 12.3 V
-Ignition Box (MSD 6AL New) Spark Test = OK
-Coil (MSD Blaster2 New) P = 1.2 ohms/S = 4.94k
-Coil Spark Test to ground = Good & Strong
-Distributor (MSD #8546) Mag P'up = 555 ohms
-Cap/Rotor = Seen Worse/Carbon Ball still there/minor Carbon & Corrosion
-Distributor Shaft =Spins Good While Cranking
-Plug Wires = OK
-Plug Wire Spark Test to ground = No Good
-Plugs = Clean
After latest call to MSD, the tech says to send the Distributor in for repair. He says the "Internal Ground" is probably bad. Says it's around $60 to fix.
I've done some searching on similar Ignition problems, and have seen ZERO mentions of this. Most of the "Spark in and no Spark out" scenarios were Cap/Rotor related from what I've read. I do have a new set coming tomorrow to rule that out.
Have any of you guys ever heard of or experienced a bad internal ground on a dizzy before? Thanks for any and all help.
Rib

Troubleshooting results so far
-Battery (Redtop New) 12.6 V
-Alternator (Tuff Stuff 130 amp New) 12.3 V
-Ignition Box (MSD 6AL New) Spark Test = OK
-Coil (MSD Blaster2 New) P = 1.2 ohms/S = 4.94k
-Coil Spark Test to ground = Good & Strong
-Distributor (MSD #8546) Mag P'up = 555 ohms
-Cap/Rotor = Seen Worse/Carbon Ball still there/minor Carbon & Corrosion
-Distributor Shaft =Spins Good While Cranking
-Plug Wires = OK
-Plug Wire Spark Test to ground = No Good
-Plugs = Clean
After latest call to MSD, the tech says to send the Distributor in for repair. He says the "Internal Ground" is probably bad. Says it's around $60 to fix.
I've done some searching on similar Ignition problems, and have seen ZERO mentions of this. Most of the "Spark in and no Spark out" scenarios were Cap/Rotor related from what I've read. I do have a new set coming tomorrow to rule that out.
Have any of you guys ever heard of or experienced a bad internal ground on a dizzy before? Thanks for any and all help.
Rib





