2slow4stock

iTrader: (18)

So, I found a new engine. The guy rolled the car, and pulled the engine. I installed it last night and it cranked up and fired up first try. But smoke... I feel pressure coming from the oil filler neck. Some say it's oil control rings, but my oil is still nice and really clean.

I check codes and it has nothing to do with omp, it feels like it's also missing when you rev it. If I vent both nipples on the middle iron and the oil filler neck, it'll idle fine with very little to no smoke. But when I rev the engine, I get pressure from both nipples and then tons of smoke out of the exhaust.

The engine is a 6 port engine, but I have a turbo on it. I know it's not the turbo when I blew out the apex seals I was able to drive it home with no smoke, so I can rule out the turbo.

Would the oil return hole being too small cause such a leak? When I squeeze my oil return line, (it's rubber) There no pressure, then when I rev up it builds up all this pressure then goes in the middle. I know there isn't suppose to be any pressure in the return line. I'm just getting frustrated...

But on the flip side the guy who sold me the engine, threw me a TII transmission. But what effect would rolling the car have on the engine? My compression is really good, and coolant holds.

Thanks in advanced, Bud

2slow4stock

iTrader: (18)

Oh, I read on another thread with someone asking about vacuum. I'm reading 10 Hg/in. Would a vacuum leak cause this?? Might be odd, but just taking into consideration of things. I have my vacuum off the middle in front of the uim.

Just went outside to fiddle without again, and I forgot to mention you can feel a misfire at idle. Would an intake leak contribute to that?

2slow4stock

iTrader: (18)

Damn, I wish I could just make this into 1 edit, but I forgot to mention. There is no oil on my spark plugs, so that's why I am confused... Sorry, for posting so many times. I can't ninja edit fast enough.

Black Knight RX7 FC3S

iTrader: (7)

hate to say it, but the oil control ring might be gone, or is going to be gone.

2slow4stock

iTrader: (18)

ahhh, yeah. I also just noticed my oil pressure at idle is around 45-50psi at 100rpms. I unplugged the oil feed from the turbo to see if that was making too much pressure, but still smoking..

sighz... Ok, any more suggestions anyone? I'm probably pull the engine tonight and see what happens. Could a intake leak cause missing/hesitation and I rev the engine? I wonder if the flipped caused the control ring to crush if it did...

fidelity101

iTrader: (11)

its a rotary, your oil is always going to look nice and clean

2slow4stock

iTrader: (18)

lol. Well I might have some good new. The the blown engine, I think the oil control rings are decent enough to reuse. I just gotta get battery's for my micrometer. So everyone leaning towards bad/gone oil control rings? That would have an effect on idle would it not?

2slow4stock

iTrader: (18)

Which control rings usually go out typically. The inner or outter? I am playing with the blown engines oil control ring, and one of the outter rings is a wee bit sticky...

HAI-TEK7

iTrader: (31)

How long ago was it since the car rolled? maybe there was oil still in the engine since the roll over? How long you been running it since you got it started?

I wouldnt reuse the oil control o-rings, just get new ones. Make sure the oil rings itself are in spec.

As for oil return, it should be 5/8" ID at minimum with no "uphills" or it will smoke. I know you pulled the oil feed and it still smoked, but just FYI. How long did you pull the feed line for? I really wouldnt recommend doing that. If you did pull it for alittle amount of time, it would take alittle for the smoke to clear if the retrun line was backed up.


Edit: there shouldnt be any pressure in the turbo oil drain line. I would look into that before tearing the engine aprt.

2slow4stock

iTrader: (18)

It was rolled most likely no more than 1 month ago (could be less i'm guessing). I've ran it for at least 30 minutes idling. When theres no load at idle i'll be fine, very little to no smoke. But once I put a load on the engine smoking hardcore.

I pulled the feed line for acouple of minutes and I noticed smoke was coming out of the fitting on the turbo. (smoke from the crank case went from the return line through the turbo and out of the feed part of the turbo.)

Yeah, I know there shouldn't be any pressure either. But when I picked up the engine, there was oil already inside the engine. But if there's pressure in the system it would just lead to control rings would it not?

I'm just trying to get lots of view points before, I pull the engine again.

Edit: I forgot to mention that the engine looks like it was rebuilt as well. It's very clean. But I can't be positive that it was rebuilt.