Supercharger hose full of grease? Need Opinions...

[gamefreakgc]

So I'm doing the long awaited tune-up and suspension rebuild on my 4Runner. I've got the supercharger off and I noticed that the fitting on the back of the supercharger housing that goes to the "Do not lift here, Factory Adjusted" thingy is full of grease, almost completely clogged. I scraped some out and it's almost like drive line grease or something. I'm really puzzled. Is this normal? And if not, what is grease doing in there?

Also, my supercharge makes a lot of noise. A new nose cone and oil is coming, but my first guess is that the rear needle bearings are shot and somehow grease made in where it is not supposed to go.

Thoughts?

 

[gamefreakgc]

Anyone? Bueller?

 

[shadow247]

Where does the other end of that line connect. My best guess is that it's just sludge buildup in the vacuum line.

 

[gs300tt]

I should take the time to read your entire post as I had to delete my previous comment. There is not much grease in the rear bearings so that causing it would be unlikely. When you replace the nose cone take the next plate off and the rotors will come with it. You can then inspect the needle bearings. They are not that hard to replace but you will need a blind bearing puller. I did mine in under an hour with a Harbor Freight puller that I modified to work like the ones you can find on the youtube videos about this.

When you get it back on clean or replace the hose and re-check it every couple of thousand miles.

 

[Xinirgi]

The valve with the factory adjusted sticker on it is your wastegate, it is vacuum operated via the line you have removed. What happens more noticabley on boosted vehicals suych as yours is the increased cylinder pressure (from boost) can leak past the rings (old, worn out, high milieage, such as maybe yours) and pressurize the crankcase more so than normal. The PCV valve takes care of this rather well in NA (naturally aspirated) applications, but when more pressure is added usually oil vapor gets mixed in. The PCV valve basically just recirculates the crankcase air back into your intake manifold, which is where that other end of the hose ends up (more or less, this is simplified). With the oil vapor there now it starts to collect and forms a light coating, which overtime can turn into a sludge or grease like you have found. I'd check your throttle body for excess oil in the tract, and read into what and how an oil catch can system works, it should fix your problem (for the oil, not the bearings).

 

[gamefreakgc]

You guys are awesome.

I've got a catch can in the mail already, so that should solve it from getting worse. I'll pull out the rotors and clean it up real good and call it a day then. Thanks for the input.