I have had my engine rebuilt & after leaving it for a week, I drained the sump & put the oil back in the tank, when trying to start it I could only get it to run on the left cylinder, checked plug gap, checked spark, checked carbs (new Amal 930's). All checked out ok, but still not running on r/h cylinder. Checked tapper clearance, ok 6thou inlet, 8thou exhaust. I left it overnight as my leg was knackered (I'm 62), when I went to start it next day oil pumped out of the breather pipe, & somewhere around the timing case. Should this wet sump that much (half a tank) overnight ? If not any suggestions ?
I'm not sure why you got…
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My BSA (sorry) had a wet s…
My BSA (sorry) had a wet sump problem, but that was just the previous owner had left out the ball bearing at the he back of the pump. Surely no bike should lose half a tank of oil overnight ! This is the first Norton I've owned since my mk 2 command back in 1978, it's basically the same engine, is it a worn pump ?
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My Commando used to wet su…
My Commando used to wet sump badly. I had a go at refurbishing the pump which didnt help much.
I bought a new pump from Andover Norton which completely cured the problem.
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Gar y ............losing h…
Gary ............losing half a tankful overnight suggests a problem with the rebuild. Check inside the Timing Cover for all the possible sources of a leak. eg.........
The Oil Pump Rubber Feed Button
The Oil Pump gasket
Oil Pump Nuts
Timing Cover Oil Seal
If you have fitted one of the thick Commando Timing Cover Gaskets then you definitely need a new Oil Feed Button. An Oil Pump gasket is a must on older bikes. See if the Oil Pump can move about even with the nuts tightened. They might be threadlocked due to overlong stud shoulders. Is you Timing Cover Oil Seal fitted the right way round?
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