AO Silver Member
Join Date: Mar 2003
Location: United Kingdom
75 Twin Spark misfire mystery
Some time ago, the 75 developed an intermittent misfire. However, it was almost like the car was stalling and starting again - the rev counter dropped and it re fired in a split second. Not ideal though! Nasty kangerooing and very frustrating.
I checked the leads, replaced both coils and dizzy caps. I also changed both king leads with decent quality brand new leads (coil to distributor) and this seemed to remedy the problem.
However, after a few months off the road at winter, the misfire is back. Not as often. In fact, very intermittent but when it 'strikes' it's bad and you end up driving by the seat of your pants. Not sure what to do, where to look now. Getting really fed up with it. Short of replacing all the plugs, leads, both distributors, I don't know where else to look.
The car used to run like a dream and was a joy to drive. I'm ending up getting really hacked off with it and don't really have the time (and certainly not £££s to spend) sorting it out!
Something is failing somewhere. You would have thought, as a twin spark, that even if one 'bank' of electronics failed, the other would compensate but it appears not!
Any suggestions / ideas / obvious things to look out or try?
Rockin' all over the road!