Chics dig the BOV

Major problem. I don't want to get pulled over for a gross polluter or endangering other motorists. My 87 Turbo II pours out a TON of smoke, sometimes it's brown, when I coast to a stop or let off the gas. It's horrible. What could it be? It just started doing this and I have no idea what to do.

rotaryracer1

iTrader: (1)

this happened to me just recently, i did the rats nest removal and took off the PCV valve and i did not have a oil catch can for the excess oil and pressure to vent into from the block to the oil filler neck, and it was creating alot of pressure in the crake case and making my car smoke like crazy at idle too.

gassrx

This exact same thing happened to me. It turned out to be an oil seal in the turbo and eventually became a VERY big problem.

MPM

So what did you do to fix it? I've got the same basic problem. Before I decide its a bad oil control ring I'm going to try other fixes.

Gene

iTrader: (1)

PCV problems that cause buildup of pressure in the "crankcase" can kill your turbo bearings and seals in short order, as the oil drain line from the turbo is gravity fed. If you have pressure in there it can prevent proper drainage. Get a catch can, you won't be sorry. If you take the thing to race track events, I highly recommend the RB oil pan baffle as well. Before I got it I would find oil all over the driver's side of my engine compartment after a hard run at VIR (mostly right turns) after getting it and a catch bottle, it's bone dry in there.

Chics dig the BOV

Where's the PVC valve?

BDentonFC

If it doesnt do it under boost, but starts after you coast to a stop, it really sounds like the turbine seal is on its way out. Ive seen one go firsthand and the symptoms were heavy smoke on decel, but no real smoke while cruising or boosting.

BDentonFC

And I forgot to mention, there is no real fix other than rebuilding the turbo.

Chics dig the BOV

It smokes under boost

Chics dig the BOV

How bout' Stop Leak in the radiator to fix those crappy seals?

Project84

I've used that in the radiator for a blown coolant seal. It actually worked pretty good.

Juan

iTrader: (28)

I tried it and my radiator blew up while I was on the freeway. Lucky for me I was right by my house.

VietFC

That is not the correct fix for oil blow-by or anything for that matter.

Chics dig the BOV

Project84- Were you blowing out white smoke too?

wan: What, in the Stop Leak, could have caused that?

Project84

My car had a blown coolant seal when I bought it. It was burning coolant and wouldn't start unless you pulled the EFI fuse and cranked the engine to flush the coolant out of the combustion area. The used car dealer didn't know what to do with a rotary, and they didn't recognize that someone replaced the pressure cap assembly with one that didn't have an overflow tube. (See picture) There wasn't a pressure cap on the radiator, so the coolant had no where to go when it got hot. It ended up blowing a coolant seal. I got some stop leak and it clotted up the area where the seal was leaking. It worked pretty good because I could let the car sit over night and it would start without having to pull the fuse and blow the coolant out. I did rebuild the engine, and when I took it apart, I could see that it did collect and hold together in the gap. Some people say it don't work, some say it does. This is just my testimony.

Project84

Here is the picture. My car had the pressure cap on the bottom left (item K), and there was no where in the system to release the coolant into the overflow bottle.

Chics dig the BOV

Cool! I'll check into that asap tommorrow. Also, tonight my car boosted to like 18psi, when I had the manlal boost controlled set @ 10psi. It was WAY fast. But can't be good. Also, I hope this helps, my car burns oil and goes through antifreeze like madd.

Chics dig the BOV

I was jsut thinking. I changed the oil a few weeks ago and it still looks golden. Not brown or even the least bit blackened. Is that a sign of a good rebuild and not foreign crap in my oil (antifreeze)?

Madrx7racer

i get some smoke and i'm leaning towards the turbo needing a rebuild..........what is the worst case scenario if i wait too long?

Gene

iTrader: (1)

18PSI? That will toast your turbine seals in short order. The turbo is also way outside its efficiency range at that point, so it's making lots of hot air, which isn't particularly good for the engine.

rotaryracer1

iTrader: (1)

all in all you need a oil catch tank! or a rebuit turbo.

emory_stagmer

Antifreeze in the oil will form a milky white foam (oil and water don't mix...)

Chics dig the BOV

Cool. Then there's no antifreeze in my oil. I'm heading to Rotary Power this week. I hope they say it needs a turbo rebuild at the most.

Juan

iTrader: (28)

It looked like it clogged the radiator forcing it to crack. Where in Pomona are you? I live by Phillips Ranch.

Chics dig the BOV

I live at Garey and Foothill.