Z1OwnersClub GB

Im starting to think my head may be crack[on the bike]
The engine is still together,is there a way of diagnosing this without taking it apart.
Or whats the way to find out? are special tools need?

THANKS

I think you will have to do a compression test first to find out if/where the leak might be.

What makes you think the head is cracked ? missfire, oil leak, backfiring ?