[Euro] Reasons for power loss

[aaronng]

Thanks for them... I'd forgotten about the air filter, i'll check that out (the revs are rising quite slow too ). Is there a way to clean the stock filter, or do u simply buy a new one?

Pick out any leaves, stones and dead bugs. You can try vacuuming it, but you won't get most of the dirt out as it is meant to be embedded between the paper fibers.