[AJD] '41 B Oil in Cylinders

[Bruce Mahr]

Mike: The cylinder walls could be scored, also, letting oil past the rings.

Bruce Mahr

----- Original Message ----- 
From: "Robert M Massengale" <ltcmikem at ktc.com>
To: "Antique John Deere mailing list" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Wednesday, April 13, 2005 7:55 AM
Subject: [AJD] '41 B Oil in Cylinders


> 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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