Whilst running the Bonnie on the driveway my son comes up and tells me I have blue smoke coming out of the LH exhaust. "What's causing that?" says he. "Ah, son that will be the valve guide. They be be a bit worn" say's I. "How do you know that" say's he. "Because that's what my Dad told me when I was 16" I say's. "But why does it happen?" "Cus Grandad said so" "You mean you don't know?"
So here we are. When I shut the throttle I get a bit of blue smoke out of the LH side. When I rev it, nothing. My old Dad told me if it smokes on the overrun it's the valves. If it does it when opening the throttle it's the rings. How can I convince my son that Grandad was right? What's the more mechanically technical reason? I need to sound like I know what I'm talking about!
Dave Tiger 100SS 1966 T120V 1972 Vincent Comet 1952