Hello,

Not many things to choose from; either incorrect ignition timing or too lean mixture (maybe caused from leaking intake)- unless any mechanical incorrectness such as beginning seizing or incorrect valve timing.

 If engine is stopped when hot and apparently won't restart - do you still have full compression then? If not, there might be a problem with stuck/untight valves.

Hope this gives a clue...

Cheers,
Alexander Engström

Sweden

--- Den tis 2008-07-15 skrev man_40it <ascenzo.p@...>:

Från: man_40it <ascenzo.p@...>
Ämne: Bsa Wm20 warming up
Till: viking27_is@yahoogroups.com
Datum: tisdag 15 juli 2008 09.11

Hello,
Running Bsa wm20, the engine become very hot and if stopped, don't restart before to be almost cool. The engine clearance and set up seem to be tuned.
Any suggestion?
thanks
man_40
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