[AJD] '41 B Oil in Cylinders

[Terry L. Hrdlicka]

Mike,

For what it's worth, I get a little oil out of the petcocks on my '50 A 
on the rare occasion when I open them (electric start, so I don't need 
to open them unless the battery is really low).  Maybe this is normal, I 
don't know for sure, perhaps someone else has more input.

All of your theories sound good, but if the machine is running o.k., not 
smoking, and not completely fouling the plugs to where they won't fire, 
I wouldn't get too excited.  Unless you really lug these things for a 
long time, they do seem to foul the plugs a little, at least that's been 
my experience.

.02

Terry



Robert M. Massengale wrote:
> I'm having a problem with oil in the cylinders on my '41B.  It's a bit puzzling to me in 
> that the B seems to run good with very little, if any, smoke out the exhaust, but 
> there is a large quantity of oil leaking out of the compression relief petcocks.  If I 
> open the compression relief petcocks while the engine is running I get puffs of 
> smoke on each ignition stroke and a prominent splatter of oil out of both petcocks.  
> After shutdown, both plugs are heavily fouled and oily.
> 
> I have reasoned that the oil must be getting in the cylinders either via the rings or 
> valve guides.  The compression is good and it's VERY hard to turn the flywheel over 
> without the compression relief petcocks open.  Even so, I guess if the oil rings are 
> bad the oil could still be getting past the compression rings.  Not sure how I'd check 
> to see if the oil is getting in via the valve guides without pulling the head.
> 
> I was hoping that just running her a while might work this problem out, but I have 
> about ten hours on her now since I got her running and the problem has not 
> improved.  Yesterday I did my first real work with her... got a fertilizer spreader with 
> 3100 lbs of 18-10-5 and spread it on the pasture.  She ran without so much as a 
> hick-up pulling the 5,300 lb load.  I'd sure appreciate any List thoughts or 
> suggestions from the List on this oil problem.
> 
> Mike
> Fredericksburg, Texas 78624
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> 




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