When You have checked Your valve clearances???? If they are totally wrong, it can happen that way..... I havent measured compressions in my 907, but its easy job in all car maintaining companies and if they are "low", or another is low, U have problems in valves.... I know, that if valve clearences are NOT correct, then U HAVE such starting problems and normally, when engine gets hot, it goes more worst....

Timbo,

Before tearing it down you can do a simple leak down test to determine exactly where the compressed air is going. Have you done this before? It not much harder than a comression test.

If the valves haven't beed adjusted for years/miles this could be the simple cause of low compression. Easier to check valve clearance than tear the top end off. Check out the Ducati Suite for instructions.

It can be burned exhaust valves, totally wrong valve clearances, bad valve seats, bad valve guides..... But check valve clearances first !!!

Thanks for replies
I will set to with the feeler gauges ths week-end and let you know what the findings are.
Many thanks
Timbo :thumbup:
907 ie red 1992
851 Strada red 1992

We are waiting.... maybe some very intresting Paso problem again...