tragopan86

could a blocked hose on the c.v.s. eventually result in oil being purged from the crankcase? This is a soft rubber hose which was collapsed and also has a tear in it.

cuatrokoop

Yes, it could. It can also cause poor running (at least the breather for my 20v head caused poor running when hot).

tragopan86

That's good news I hope. Maybe this is whats at the root of my trouble. I checked the plugs and they were all looking proper. What I dont get is why this hose is so floppy. Is it just degraded? I would think that a hose thats supposed to operate under vacuum would be more rigid.

cuatrokoop

They are fairly rigid, when new ;-)

They get oil in them, and tend to disintegrate over time...Nature of the beast.

tragopan86

Thanks for your view!

V8Norm

Same hose on my car is completely collapsed also.. must be a fairly common thing.

tragopan86

Now I have to find one out here in Hooterville, Maine. Perhaps I can fashion one out of bulk hose from NAPA. Any caveats on this?

SteveAngry

You talking about the crankcase hose that runs from the block up to the Tri-hose connection on the valve cover?

If so, the turbo cars have a floppy rubber crankcase hose that is notorious for ripping and creating vacum leaks...

The non-turbo cars got an upgraded steel pipe that replaces most of the rubber section. You should be able to pick one up at nay junkyard.

Steve
Michigan

verboten1

any semi-rigid rubber hose should do, the vacuum created isnt enough to collapse a new rubber hose

SteveAngry

that the original crank hose on the turbo engines has different inlet and outlet dimensions. Using a generic hose that is the correct size on one end and close on the other usually leads to a crummy connection that won't hold, hence a vacum leak..BTDT.

I have also looked for a generic hose that tapers to the right size but have found nothing yet.

The N/A cars you can pretty much rig something from the crank nipple to the metal hose. Also BTDT...

Steve
Michigan