K&B sportster .28 will not start

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K&B sportster .28 will not start

Postby Dave007 » Wed Oct 29, 2008 1:31 pm

I have a sportster .28 that I bought used. It has good compression good fuel and a Long reach glow plug with an idle bar. I have the engine on a test stand. It will turn over under its own power for about three turns and then jam. It jams in the same spot consistently.

Thanks,
Dave
Dave007
 
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Postby Frank Klenk » Sun Nov 09, 2008 6:34 pm

Dave

Is the piston at the top every time it stops? I had an engine do the same thing. Turns out the head bolts were overtorqued, distorting the case. I retorqued them and it was fine. Also make sure the drive washer is not jamming up on the case. When it quits check to see if you have crankshaft fore and aft clearnance.
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