engine noise

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   Just got my grandfathers 37 allis b going. Thing seems to be running great. However ,in third and kinda lower throttle it makes a intermittent click, sometimes will sputtered and shoot a spark of two out the exhaust.  Any ideas??   Thanks, matt

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mweiland Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 09 Sep 2012 Location: s.e. wisconsin Points: 33	Post Options Post Reply Quote mweiland Report Post Thanks(0) Quote Reply Topic: engine noise Posted: 07 Oct 2012 at 3:21pm
	Just got my grandfathers 37 allis b going. Thing seems to be running great. However ,in third and kinda lower throttle it makes a intermittent click, sometimes will sputtered and shoot a spark of two out the exhaust. Any ideas?? Thanks, matt

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DaveKamp Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 6069	Post Options Post Reply Quote DaveKamp Report Post Thanks(0) Quote Reply Posted: 07 Oct 2012 at 8:07pm
	Hmmm... I would check valve lash adjustment first, see if if mebbie an exhaust valve is getting insufficient lash. For engines that have been 'asleep' for a while, I generally set the lash a big on the loose side for a few running hours, just to increase the likelyhood that it'll work the stem/guide for an earlier closing 'till everything's back in fresh lube and buffed-in again... then I set it back to spec.
	Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.

mweiland Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 09 Sep 2012 Location: s.e. wisconsin Points: 33	Post Options Post Reply Quote mweiland Report Post Thanks(0) Quote Reply Posted: 07 Oct 2012 at 8:27pm
	interesting.. there was one stuck valve and a bent push rod on that valve as well.. freed up with pb blaster. and i may have over tightened the adjustment on the valve. plus i even tightened the intake and exaust on the number 4. felt too loose , but i can re adjust and see if that helps. its weird thing runs like a top and then acts up in third....i never touched the timiing and was wondering if acelarating or retarding it would help.. perhaps just going down the wrong path... i'll try the valves first . thanks