Oil leak

[Carla 123]

New to me mcx turbo 2015 viper,have not even ridden as was purchased in April. Ran in up to temp about 2 weeks ago and thought it's smoking pretty good but thought it was the seafoam burning up.did the belly pan mod on exhaust side with rivet nuts and noticed oil in the bottom.after looking around noticed that where the exhaust enters the muffler its leaking and also burning up in the muffler.where do I even start looking for this issue.sure hope I didn't get burned on this sled.see attached picture where it's leaking

 

[Norse]

Sounds like oil coming through the turbo seals. Check for shaft-play on intake side, every direction. If it easily touches the housing, the bearings are out. Check the crank ventilation; black plastic box with tubes going in and out above turbo, could be a blockage in there. Lot of posts on that. Check oil hoses for dents/too sharp turns. Turbos are sensitive to oil pressure. Maybe too much oil in tank? You could post a picture of the exhaust side in turbo. Also, turbo pressure must be correct as according to the kit you have. Maybe the wastegate actuator rod is wrongly adjusted or even damaged.

 

[Carla 123]

Ok thanks,will start checking those things out .it only starts burning oil once it warms up

 

[Carla 123]

Well pulled the intake off and there is no play in that shaft.there was oil in the intake hose.is that supposed to be there?

 

[maim]

on the sidewinders, the oil tank vent goes to the air box pre turbo and fills the intercooler with oil if left that way over time. not overly familiar with the turbo viper but the sidewinder fix of plugging the hole in the air box and extending the vent tube so it comes out the bottom of the sled might work if it is set up the same way.

 

[Carla 123]

Thanks for the reply maim,totally differant setup.no intercooler as well

 

[maim]

ok. now i know.

 

[maim]

i remebered reading this back in the day and went and found the thread,

Hurricane Turbo failure

Well another problem and I’m not happy to say the least. Drove up to Houghton because our snow here was Less than acceptable. Trails were awsome and tons of snow, did about 10 miles and all of a sudden no boost. Checked all my boots and hoses nothing looked wrong. So we headed back to the hotel...

ty4stroke.com

about the oriface in the turbo oil line.

 

[Norse]

This is how it should be after installation. Same principle with cold air intake. The "engine vent. tube" causes oil buildup in the intake over time. It's normal, but not the preferable choice. As maim said, this can be rerouted out the bottom.

 

[Norse]

An important step to keeping that turbo in good condition is to always let it idle until the temp light stops flashing, then driving gently before reaching operating temps. Also, driving gently and letting it cool down before shutting off. Doing the opposite causes the turbo to burn oil inside its shaft chamber, meaning it will get clogged. Maybe you have some form of blockage caused by that. I wonder if there is a mesh filter at the end of the oil return line?

 

[Carla 123]

Haven't even driven this sled yet.if I route the vent tube out the bottom do I just plug the hole in the cold air intake?I will check the oil return line.so if the vent tube is bringing oil into the air box would it also be burning through the turbo as well
causing the engine to burn oil once it's warmed up?sorry for all the questions I'm just hoping the person I bought this from didn't screw me and I know it's buyer beware

 

[Norse]

Haven't even driven this sled yet.if I route the vent tube out the bottom do I just plug the hole in the cold air intake?I will check the oil return line.so if the vent tube is bringing oil into the air box would it also be burning through the turbo as well
causing the engine to burn oil once it's warmed up?sorry for all the questions I'm just hoping the person I bought this from didn't screw me and I know it's buyer beware

I was assuming you bought it used. Yes, you can use simple silicone tape to cover the hole. I routed the vent hose down in front of the turbo, for it to follow the existing oil lines at the bottom. Took it out behind exhaust, but had to check every time for ice buildup before starting. I did it mainly to keep the intercooled unclogged, and for less spilling if I rolled the sled. No issues after that.

The oil would not burn on the intake side, but be forced into the engine, resulting in poorer performance over time. It would probably burn some oil, but not much at all. I think the main issue you have is oil coming out the seals from inside the turbo, which will naturally be forced out the seals on the turbo exhaust side. And this would be due to something restricting the flow either right after the shaft or around the return line. If you're able to clean the lubrication system on the turbo, I would recommend that. The seals inside it are prone to leaking if the flow isn't good enough.

I don't think he screwed you over, maybe he didn't even notice it. I'm not even sure I would notice. Questions are what this forum is for

 

[Carla 123]

Well after further poking around the vent tube in the intake goes to the roll over box.according to mcx installation instructions this is supposed to vent to the valve cover.wondering if this is the issue.

 

[Norse]

Could be. If the vent tube is blocked the pressure could push oil out the turbo seals. Be sure to check that oil line exiting below turbo too.

 

[Norse]

*this tube could be clogged, but it is supposed to be there.