Guys,

ive just fitted my old Irvine 40 (red head) to my 40 trainer.

when warming up from cold it seems to spray fuel from under the cylinder head where it should seal.

it doesn't seem to affect power and stops once up to temperature.

is this normal? I would assume not.

all the head bolts are tight so is there anything i can do to stop it happening?

Other than at the engine runs brilliantly and pulls my trainer twice as we'll as the magnum 40 I had on it.