Hi, I have a 1980 z750e and I'm having trouble starting after I renewed the head gasket. I followed all the instructions in the manual so can't see what I've missed.
when I try to start it, it just turns over but if I give it full throttle it kind of sounds like its ticking over but lumpy. After about a minute it pops and then stops.
does anyone have any ideas of what the problem could be please. Thanks for reading.

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