My son has a 1984 528E BMW Sedan. He last started it in May, was away until July. In July the car would not start. We have discovered ONLY ONE distributor wire point is sending Spark (Front to Back of engine....3rd plug). We replaced the coil, distributor cap, new rotor, and new battery. Same symptom. They engine will start and apparently run on one cylinder at low RPM and then will just die. WHAT ELSE would cause it not to have spark on all 6 cylinders?

Thanks for the clarification. Only way to a solution. There is a crank position sensor as well that may be the culprit. Look near the bottom pulley at the front of the engine and you will see a connector attached to the crank sensor. When they go bad they go completely bad. That would be the next step of the process. Sometimes the connector gets all greased and dirty. If I remember correctly you should get a reading of near 600 ohms at the sensor side of the connector (pulses between like 600 ohms and 50 ohms while engine is cranking). Let me know how you make out. Thanks for the clarification. Only way to a solution. There is a crank position sensor as well that may be the culprit. Look near the bottom pulley at the front of the engine and you will see a connector attached to the crank sensor. When they go bad they go completely bad. That would be the next step of the process. Sometimes the connector gets all greased and dirty. If I remember correctly you should get a reading of near 600 ohms at the sensor side of the connector (pulses between like 600 ohms and 50 ohms while engine is cranking). Let me know how you make out.

I did not know you posted the following solution: Thanks for the clarification. Only way to a solution. There is a crank position sensor as well that may be the culprit. Look near the bottom pulley at the front of the engine and you will see a connector attached to the crank sensor. When they go bad they go completely bad. That would be the next step of the process. Sometimes the connector gets all greased and dirty. If I remember correctly you should get a reading of near 600 ohms at the sensor side of the connector (pulses between like 600 ohms and 50 ohms while engine is cranking). Let me know how you make out. I WILL TRY THIS NEXT. SORRY FOR NOT REALIZING YOUR COMMENT EARLIER. THANKS. This is reference the 84 BMW 528e Roger Edwards. I tried the Reply, but it did not work. I did not know you posted the following solution: Thanks for the clarification. Only way to a solution. There is a crank position sensor as well that may be the culprit. Look near the bottom pulley at the front of the engine and you will see a connector attached to the crank sensor. When they go bad they go completely bad. That would be the next step of the process. Sometimes the connector gets all greased and dirty. If I remember correctly you should get a reading of near 600 ohms at the sensor side of the connector (pulses between like 600 ohms and 50 ohms while engine is cranking). Let me know how you make out. I WILL TRY THIS NEXT. SORRY FOR NOT REALIZING YOUR COMMENT EARLIER. THANKS. This is reference the 84 BMW 528e Roger Edwards. I tried the Reply, but it did not work.