[AT] stuck good on a WD 45 engine question!

[Phil Auten]

Just a wild guess here, but it could be that the ring gaps are all lined up.
Another possibility is a broken ring on each of these.

Phil

At 03:55 PM 12/11/2006, you wrote:
>My neighbor an I are super expert tractor mechanics :)  but we are 
>stumped and need ATIS help!    Got a WD 45 with even compression at 
>119 lbs and good oil rings....no blowby problem and a fresh valve 
>job (superior quality of course), and a good tight head 
>gasket.    The problem with this tractor is that it blows enough oil 
>out the exhaust pipe to make your face greasy if your're facing a 
>headwind.  It all seems to be coming from cylinders 3 and 4...which 
>are fouling plugs.  We put valve stem seals on the exhaust valves, 
>but still it blows oil and smoke out the exhaust pipe.  It seems to 
>me that the only place for engine oil to get into the exhaust system 
>would be within the head somewhere.  Question is....Where or 
>How?   We are just now going out to plug the oil feed pipe to the 
>head and run it awhile without oil feed to the rocker arm to see if 
>the smoking problem changes any.....but even if it does....where 
>would be the problem.....a crack somewhere in the head?  It is 
>blowing too much oil for a hairline crack we maybe can't 
>see.     ANY IDEAS WELCOME PLEASE!     John W.
>
>                    In the wide-open spaces of NE Oregon