OK......Very long story short. I have an MSD distributor, coil, tach adapter and 6AL box. All bought new. Each piece was replaced by MSD to eliminate the possibility of a faulty component. Car will run great sometimes for 50 miles, sometimes for 200 miles. It will without warning start to break up, miss and lose power. However it will idle fine. Sometimes if I shut the key off and restart, the car will run fine again for some period. Sometimes not.
View attachment 6050
View attachment 6051 If I pull the plug on the 6AL and remove it from the other components, the car will run fine forever. I have had three new boxes from MSD and still the problem persists. I hate to lose the box because the car runs noticeably better with it. I have rerun ground wires.....isolated and insulated all installation wires and still the problem persists. Any ideas???????
Al
bad86
View attachment 6051 If I pull the plug on the 6AL and remove it from the other components, the car will run fine forever. I have had three new boxes from MSD and still the problem persists. I hate to lose the box because the car runs noticeably better with it. I have rerun ground wires.....isolated and insulated all installation wires and still the problem persists. Any ideas???????
Al
bad86