Happy Easter to all, I tried to start the MK5 this morning for the first time, after all the work seemed to be finished.The bike starts, but only on quite wide open throttle and then it is only running on the LH cyl.Both cyl are about 120lbs compression, there are new plug leads and caps and the plugs have been cleaned and the spark looks good, all tappets are set right.I have had both carbs.ultrasonically cleaned and there are new main jets in both.I noticed when I kick it over, there is blowback from the RH carb.Finally, I have tried everything to stop the LH carb from leaking petrol from the small vent in the cap The needle seats before the tickler button can interfere Any suggestions.Len
Just found a bit more re the running.If I manage to start it and open the throttle wide then the bike revs up and it fires on both cylinders.You can see the exhaust gases coming out of both pipes.
Has anyone else had the problem of the one carb leaking fuel from the top vent, pointing to the needle not sealing Surrey Cycles said they can supply a new float chamber from another Amal carb, but it is 50mm dia. as compared to 40mm dia. of the 274s.