Its definitely a repetitive tick-tick, at about 1 tick per 2 revs [which is what made me thing valve gear in the first place]. The miss is solid at idle - one pot not firing. The backfire must have been on track - I didn't hear it in the paddock.
Taking a borescope to have a look at the top of the pistons sounds a good next step in the non-destructive test plan.
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Tony K
PCA Potomac, Rennlist Member
89 944 Turbo
85 Carrera - Sold
TrackVision
944Cup
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