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Discussion Starter #1
Hi guys! Im having a problem with my STi recently.

I have Perrin recirc BOV, K&N drop in filter, catless downpipe, Magnaflow cat-back and Cobb 91 Stage 2 MAP.

always used some Gulf 5w/40 oil with OEM subaru filter.

All started with my car having problems while accelaration.

So I first re-mapped with my AP and kinda fixed the problem.

But it came back : / Did a oil change and I figured out that there were only 2 qts left on the 5 i did put in :O

I did install a new part too, the Greddy oil plug but I don't think my problem comes from this part -_-

So when I start-up my car, a lot of blue smoke goes out, and my acceleration is still bad :S

Anyone had this issues?

thanks for your time!
 

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Time for new pistons...you more than likely have busted ringland(s). Compression test will probably say which ones if it's that bad. The more you drive it, the more damage you are potentially doing, especially if you are going through oil that fast.

Park it at the nearest shop you trust (or dealer if you must) and get ready to build/replace your motor.
 

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Yeh, what he ^ said. That does not sound good at all. Your acceleration problems are probably stemming from all that oil getting into the cylinder and burning, probably lowering your octane significantly (as well as the loss of compression).

You do NOT want to keep driving like that. Get that car into the shop ASAP. Hell, tow it to the shop!
 

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Discussion Starter #4 (Edited)
I forgot to say that I didnt made an oil change for the past 4 month, so thats why it was so low on oil. I'll check my oil often by now.

The nearest subaru shop is at 250 miles from my place haha
 

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If you are getting bluish smoke out of the tailpipe, then you are burning oil. The oil is either coming from your breather system (still stock I presume, no catch can/aos), or it is getting by the piston rings and into the combustion chamber, or it is coming from the turbo.

If the breather system is stock and causing a problem, then I would think there should be little smoke while just cruising.

If you are getting smoke regardless of what you do, then a ringland is more likely.

Here are two tests that will help to determine if it's a ringland (which means you really should park the car asap if it is)
1. Start the car and pull the oil cap off. If smokes comes out of the filler tube, then it's probably a ringland.
2. Push the gas pedal to the floor and try to start the car. The car should just crank and not start (depending on the tune). You will hear the compression stroke of each piston. If they don't all sound the same, then you probably have a compression issue (ringland). Typically the dead ones will sound "flat" and quieter (very little compression, so very little noise in comparison).

If either of those fail, then you most likely have a motor issue that will require a rebuild. If they pass, pull your IC and look for traces of oil. If there is a lot of oil in the IC, then something is probably screwed up with your breather system.
 

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i would say to check your turbo seals.. this doesn't sound(to me) like ringland failure. I would take your intercooler off and check for oil, then take your downpipe off and check for oil there.

report back with what you find.
 

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Discussion Starter #7
Alright will do! Recently, I did change the gasket behind the stock bpv to install my Perrin one.

I did see a bit of oil comming out of there. Could it only be the turbo seals?
 

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i would say if that is the case then yes. if you have oil coming out of your intercooler that is not good. its okay to have a little blow by but if its coming out of your gasket that sounds like there could be quite a bit of oil in there.. i would check asap.
 

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Look at everyone jumping on cracked ringland bandwagon. In essence it could be a cracked ringland, but there is no way to tell for sure until a compression test is done. Low acceleration could definitely be caused by a leak of some sort. Keep us posted!
 

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Oil in your intercooler is normal, you should see a film not pooling.

Blue smoke is oil, more than likely not a ringland issue which would give you more of a white smoke.

I would say its a turbo issue, sending oil into your DP then burning it, which would give you a bluish smoke.

Another thing that points me towards that is the smoke under acceleration which is almost never a piston issue. You would also have a lack of power if the turbo is going.

If you can, loosen up the DP and see if you have any oil in the exhaust portion of the turbo or in your downpipe.

Good luck!

BTW, lolz at everyone jumping on a ringland.
 

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Look at everyone jumping on cracked ringland bandwagon. In essence it could be a cracked ringland, but there is no way to tell for sure until a compression test is done. Low acceleration could definitely be caused by a leak of some sort. Keep us posted!
Everyone jumped on the bandwagon because that's what it is. If it looks like a duck...
 

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Pretty sure ring lands hardly ever smoke once the car warms up and send white not blue smoke.

If they sound like a retard.....
Now why would ringlands cause water in the combustion chamber and produce white smoke as opposed to blue smoke, which is oil? hmmmmmm?

The severity of the ringland crack determines how much it smokes. Large crack = more compression loss and more oil in combustion chamber. Increase throttle and you get more blow by and more smoke.

A small crack will only produce oil on cold start as the car has sat long enough to get oil slowly seeping through the crack and compression remains fairly good so relatively little blow by and smoke while driving.

edit: And did you even read the OP's story? Smoke on startup. He didn't even mention smoking after warming up. You're right....if they sound like a retard....
 

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Pretty sure ring lands hardly ever smoke once the car warms up and send white not blue smoke.

If they sound like a retard.....
Broke piston number 3 a couple months ago and their was almost no smoke at idle but as soon as i accelerated their was a bunch of blue smoke coming out the back. long story short....blue smoke was a busted piston in my case, and under the same circumstances as the op. White smoke is indicative of a head gasket or other issue with coolant involved but as an above post said...best bet is to do a compression test. its fairly quick and should give answers.
 

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Broke piston number 3 a couple months ago and their was almost no smoke at idle but as soon as i accelerated their was a bunch of blue smoke coming out the back. long story short....blue smoke was a busted piston in my case, and under the same circumstances as the op. White smoke is indicative of a head gasket or other issue with coolant involved but as an above post said...best bet is to do a compression test. its fairly quick and should give answers.
Agreed that a compression test should be done IF he checks his exhaust system and finds no oil present. I've always been a believer in checking easy and inexpensive things first then work your way up.

I just thought it was funny that this problem could be a multitude of issues and everyone is like.. OMG RINGLAND IS BUSTED!!
 

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Agreed that a compression test should be done IF he checks his exhaust system and finds no oil present. I've always been a believer in checking easy and inexpensive things first then work your way up.

I just thought it was funny that this problem could be a multitude of issues and everyone is like.. OMG RINGLAND IS BUSTED!!
Once again, it's because that's exactly what it is.
 
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