Excess oil in exhaust.

My 74 850 NOS with only 350 miles on it, has excessive oil in exhaust rocker and valve chamber and in exhaust on left side only. Plug wet with
oil and some white smoke on that side exhaust and muffler. Is this likely caused by a bad guide seal on the intake valve of this side or is it
more likely from bad rings on this side? The bike was in an accident after its first 300 miles (one or two days) and stored ever since . Upon starting up after 35 years, this excessive oiling is constant although probably only amounts to a couple of ounces per short trip or a liter/hr of running. Compression is good in this cylinder (160-180 psi) . Oil is clean. I will do head over again as the seals on the intake guides are suspect.
I just fitted a new exhaust valve and lapped it in . I will take off the barrels and check the rings too I guess.
Just wonder if anyone else has seen this problem on a fairly unused bike that runs well .
cf160DP , In Ottawa, Canada

Check the oil return hole from the head through the cylinder block. It's not uncommon for the hole to be clogged by RTV or sealant at the base of the cylinders.

Welcome! Ride it a bit, see what shakes out.

If you're going to have the head off, it's not that much more to get the barrels off and see what's going on. If it's all clean, I'd probably just hone it a bit or not as to your liking, maybe new rings just for drill and then make sure the head is copacetic.

You should be fine after that, or you could just ride it until it changes or not, then decide.

Pictures please.

Dave
69S

Are you saying that the rocker box is not draining? that you can see excess oil in there, as compared to the other side? that it is not draining?

If that's not the case, then with that low mileage there is a fair chance that the rings have not yet seated. Ride it.

Thanks for the thoughts ,gentlemen:
I will ride it a bit more , but I think I will take it down soon , because one side is so perfect and the other side is so wet, there must be something wrong somewhere .
Thanks for the good thoughts ,
Dave in Ottawa, Canada

Take it down Just for peace of mind My 75 did the same thing I took it down all fixed

Phil

Loading up Crazy Combat with the wife and camping gear for the trip to Ottawa ( west end ) next week.