I have a 86 EA82 leone that is doing some strange things like the tacho is jumping around ,when the revs are low all the warning lights start to glow and it seems to have a miss and it sounds like it is pinging for a short time 15-20secs then runs good again,it only does the miss and pinging sound every so often not all the time.

Does anyone have any ideas as to whats may be going on ??

thanks for any help
Marc