Thanks for replying. I replaced the injectors because I figured they were clogged. Unfortunatly the fuel distributer is probably the culprit. I think the 7th cylinder works at higher RPMs though, because the car is driveable. But the "tugging" problem only started after I changed the injectors. Maybe it's a coincedence.
Coil output is related to the distributer cap, right? Well, I changed that and all of the sparks are getting sufficient voltage.
PS the car is 1978
[This message has been edited by Mark Sare (edited 02-03-2000).]