Originally Posted by StmbtDave
Balance shaft seal should only oil your filter. I can't imagine there would be anywhere enough oil going through the breather hose to make it into the combustion chambers. Did you change the valve seals when you did the new guides? Bad valve seals can suck a lot of oil.
Thanks Dave. Yep, we changed the valve seals when we did the guides, they were pretty knackered when they came out.
Is there any direct connection between a balancer shaft seal and the combustion chambers?