Just rebuilt the head on the cage after the pistons and valves decided to have a party together. Everything is back in place, engine is turning and trying to fire but the bloody thing just refuses to start.

I'm sure the set-up is right and all wires, pipes etc are back in place. But I've looked at it so many times now and can't see any problems.

I'm looking for a fresh pair of eyes that knows more than just the basics of checking petrol, spark etc.

The obligatory beer etc is available for whoever can help.