Jonathan Kidson

Thank you for your responses. Will see if these are a solution J

I have a TR4 just being re commissioned. Engine rebuilt and firing but misfire on N0.1.Good compression on all cylinders. Using a glass plug it is apparent No 1 is sparking but not being fuelled until it hits 2500 rpm. Below this plug stays dry. What would cause this ? Have re skimmed head, new distributor, leads etc and plenty of sparks, timing fine just this problem. Could it be a broken ring not making enough 'suck' on the in stroke ? Any ideas very welcome.