This is a discussion on Oil Consumption within the Wolverine General Discussion forums, part of the Yamaha Wolverine Gen 1 708 cc SxS category; Does this issue seem confined to 2016s? Has it been remedied in 2017 and 2018 models?...
Does this issue seem confined to 2016s? Has it been remedied in 2017 and 2018 models?
I dont know, if its the egg shape cylinder Papaskeeta had then I would hope they got it fixed.
With a big single cylinder there is large air pulse in the crankcase and I was thinking that if the evaporation temp on the Yamalube oil isnt real high, combined with the crankcase venting to the intake maybe its getting sucked through the engine.
I have no blue smoke and no burnt oil smell to the exhaust, but maybe the AIS is cleaning it up, who knows????
Whatever it is the T6 really helped.
So far, it not worth it to me to tear into it.
I vote for bad valve stem seal.
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Whats the consensus of throwing a Wiseco 11:1 in it while its apart??
Did you read the post from the engineer that document his oil usage?...Dealer (a good one) discovered an out of round cylinder.. Fixed under warranty...
@noload - are you running a PCV on your machine? I'm no engine expert, just curious if you have added any fuel.
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Originally Posted by MNDirtRider
No engine mods.
So it sure looks like the same issue papaskeeta had . Looks like it will probably end up being a recall I would think . But what I can't figure out is why onlu some . Their are people on the forum that run very high rpm and don't burn any oil . It's going to take a bunch of guys with this issue to complain to Yamaha with the facts and proof for them to step up and fix this problem before you haft to fight with a dealer to get it fixed under warranty and to tear it apart and measure the bore .
My "symptoms" were the same as Papaskeeta, except piston was centered in bore when I removed the head, and I have even contact (wear) across the wrist pin. I measured the bore and it is within 1 thousands at every point I checked. I had a few mechanics inspect the parts and none of us see a "smoking gun" for the oil burning.
We're guessing its coming in on the intake side, probably valve seals. Unfortunately the seals are a positive fit and you have to mangle them to get them off so its impossible to tell if they are bad. I dont have a way to measure the valve guides but the clearance doesnt seem excessive.
In hindsight wish I had just started by doing the seals instead of pulling the head and cylinder, but at least now I know the cylinder is well within spec and everything looks good in there after 3500 miles.
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