Hi Grumpy, have done previous test but with in-line spark tester and this is what i came up with.
Will only run properly with throttle held just above idling with nice constant spark. If i try to drop the revs or up the revs it will cough, splutters as you know, what i did notice was as soon as the motor started to play up so did the spark, it was almost is if it had a constant miss until i brought the throttle back to were it was running best. The spark was still there it just seem to loose some so of it punch so to say. Let me now if i have explained this properly Grumpy, if not will try again.
