GrossPolluter

iTrader: (1)

So my s4 t2 sat for a good 2 maybe 3 years. I left some oil in the rotors and spun it over without spark plugs before it sat. I'm wondering if some oil or water seals got damaged over sitting. The exhaust has a lot of smoke coming from it. Enough were I can't drive it on the streets. I've idled my car for over half an hour and the smoke is still coming out. A compression test won't show bad oil control , will it?

Black Knight RX7 FC3S

iTrader: (7)

since its a turbo, make sure its not smoking from the turbo.

AGreen

iTrader: (11)

What kind of oil did you use on the rotors?

RotaryEvolution

iTrader: (30)

Robert Stanton

iTrader: (2)

Silly question but is it blue or white smoke? I would check the turbo first..

NCross

iTrader: (18)

I'd say your oil control rings are rotten. 3 years is a long time for a 13b to sit undriven. Unless you spun it over by hand every day for 3 years the rubber will break down. Not to mention if you used too much oil it will smoke like a freight train for about 30 minutes. It gets stuck in the exhaust and just smolders until it's gone. Ever seen the "ATF trick" BS people talk about?

If you want to try to revive it for a few thousand more miles buy a bottle of White Shepard oil stop leak. It's a seal sweller. Not a rebuild in a bottle, but it should slow the smoking down, and you might get at most another year out of the engine before the smoking comes back and is unbearable. Save for a rebuild in the meantime.

RotaryEvolution

iTrader: (30)

if you want to verify the engine remove the exhaust at the downpipe and run the engine uncorked. if it still smokes then you know the engine needs to come out.

i had one car about a month ago that had the exhaust filled to the rim with oil. it was so bad it was actually dripping oil out of the cans at the rear of the car. this was after i rebuilt the engine, i was about to yank it out and tear it down before a friend talked me into running it exhaust-less.

long story short the engine wasn't smoking, the exhaust from the cat to rear of the car was so oil soaked that it took 5 hours to burn almost completely off. the customer wound up replacing the exhaust because it still smoked randomly and was persistently not going away. found it odd because the oil level never dropped at all while i was running it so i scratched my head over that one for days, never had seen one that bad ever before.

so if you did have the chambers completely full, it may actually just be cooking off in the exhaust. should have ejected the oil before installing the engine. but as mentioned, easiest way to verify the engine is to drop the exhaust and see what happens.

misterstyx69

iTrader: (142)

I'm gonna say that the car was stored for 3 years full of oil and needs to burn off the freakin oil first so it stops smoking.
An hour and a half at idle is not enough time.

GrossPolluter

iTrader: (1)

I totally forgot. Would it make a difference?

Thanks for all the great responses! i'll try runing it with open downpipe. It would make sense that there could be crap in my muffler because I saw my mom gardening a while ago, and the water hose was giong into my exhaust! I really hope that is the issue.

So for oil control rings, I can tear apart my engine with a new o ring kit?

Is it safe to reuse those bolts?

Will the oil control rings show in a compression test? If it came down to it, I'm debating on a complete seal rebuild kit.

Is there such thing as using a cyl leakage tester on a rotary?

AGreen

iTrader: (11)

Yes. Something with harsh detergents in it such as automatic transmission fluid could deteriorate the rubber oil control rings.

Yes.

Yes


Nope. Side seals and apex seals. That's it. As mentioned already, run it without the exhaust for a little bit and see if it still smokes. It doesn't take long to do that, and it's a hell of a lot better than taking the engine out and tearing it down to still have it smoke because the exhaust is full of oil.


Not really. I know what you're talking about, but it's not very applicable to the rotary.

RotaryEvolution

iTrader: (30)

i wouldn't recommend just doing a soft seal reseal on the engine if it still has the original 3 piece apex seals.