RR/Allison 250 mechs?

Profile picture for user ZRX61

Member for

14 years 4 months

Posts: 4,789

Friends bike with the RR/A 250, says the smoke is from diesel burning off due to a leaking tank sender unit. Looking at the left side when it fires up I have doubts with that diagnosis.... What's the part on the left that's spewing smoke? https://www.youtube.com/watch?feature=player_embedded&v=I1ZFHzAKxZw
Original post
Profile picture for user The Blue Max

Member for

14 years 6 months

Posts: 2,104

Looks like the labyrinth seal has gone to me , quite common on the A250.