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Old 04-26-2014, 11:38 PM   #1
FauxSunn
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Default Titanic Oil Consumption

I've got myself an '02 WRX with 156K on the clock. Mods include short ram, exhaust, up pipe. I've been through the ringer with this vehicle.

Most recently, the oil consumption got to a point where it had to be repaired. Maybe burning 5 quarts in 1,000 miles. After a while the boost started leaking somewhere. I had it checked out at a shop and sure enough the head gaskets/valve covers were done for. They were bleedin bad.

In addition, my up pipe was cracked and the turbo was on its last leg. Now it's out of the shop. New head gaskets, valve covers, turbo, found a catless up pipe, timing belt, spark plugs and some other odds and ends.

Now that's it back from the shop it seems to run great. However, instead of smoking under the hood, it now smokes out the exhaust. Badly. Shop tells me they suspect piston rings. More or less that it wouldn't be worth taking the engine apart to find out.

I took the vehicle and decided to test resetting the ECU. Runs better and burns considerably less. The CEL for Catalytic System below threshold is thrown on, but I knew that because the previous owner has some strange exhaust on it. When the CEL is on it acts strange under acceleration, but that's hard to test since I've been trying to baby the thing.

tl;dr new head gaskets/valve covers/turbo/up pipe and it's still a chain smoker. Is my engine grenaded? Would getting a proper tune help in any way?


Side note: I have not had a compression test done and was planning on asking the shop to help me out on that.
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Old 04-26-2014, 11:47 PM   #2
Fender137
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I would start with a compression test before anything else. This will conclude which direction you will take on next.
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Old 04-27-2014, 12:37 AM   #3
vicious_fishes
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pop the breathers off and see how much air (oil) they're pumping. with 156,000 on it, my suspicion is a ****load of blowby from worn rings.
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Old 04-27-2014, 10:18 AM   #4
danger1138
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Check/ replace pcv.
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Old 04-27-2014, 11:21 AM   #5
FauxSunn
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Quote:
Originally Posted by Fender137 View Post
I would start with a compression test before anything else. This will conclude which direction you will take on next.
I will get on that.

Quote:
Originally Posted by vicious_fishes View Post
pop the breathers off and see how much air (oil) they're pumping. with 156,000 on it, my suspicion is a ****load of blowby from worn rings.
Sorry, I'm still learning. What do you mean by breathers? How do I check that?

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Originally Posted by danger1138 View Post
Check/ replace pcv.
Forgot to mention I just did that yesterday. The one that was in there seemed fine but I replaced it anyway.
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Old 04-27-2014, 11:31 AM   #6
boosted25
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Why would you spend all that money on a tired engine that burned oil getting the head gaskets replaced? You can order a jdm ej205 on eBay for like 1k and swap it in. Problem would be solved completely.
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Old 04-27-2014, 12:38 PM   #7
FauxSunn
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Quote:
Originally Posted by boosted25 View Post
Why would you spend all that money on a tired engine that burned oil getting the head gaskets replaced? You can order a jdm ej205 on eBay for like 1k and swap it in. Problem would be solved completely.
I have an extended warranty through the bank. Was relatively cheap. I don't really have that kind of dosh to drop, but if there is an EJ205 for a grand I'd like to see it. :v


Edit:

And I was under the impression that the oil consumption was due to the head gaskets.
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Old 04-27-2014, 04:50 PM   #8
AlexWRXbruh
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Quote:
Originally Posted by FauxSunn View Post
I have an extended warranty through the bank. Was relatively cheap. I don't really have that kind of dosh to drop, but if there is an EJ205 for a grand I'd like to see it. :v Edit: And I was under the impression that the oil consumption was due to the head gaskets.
head gasket issue would result in oil n coolant mixing, but wouldnt burn anywhere close to that amount of oil...definitely blow by..in other words, buh bye rings. New block time?
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Old 04-28-2014, 04:38 AM   #9
HinshawWRX
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With car warm and running open the oil filler cap. Do you see smoke?
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Old 04-29-2014, 05:03 PM   #10
FauxSunn
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Quote:
Originally Posted by AlexWRXbruh View Post
head gasket issue would result in oil n coolant mixing, but wouldnt burn anywhere close to that amount of oil...definitely blow by..in other words, buh bye rings. New block time?
It sounds like it. Like I said I'm still learning. I didn't know that at the time. (owning this car is a true learning experience.)

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Originally Posted by HinshawWRX View Post
With car warm and running open the oil filler cap. Do you see smoke?
Tested this today. Nope.
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Old 04-30-2014, 01:57 AM   #11
Uncle Scotty
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mmmmmm

what oil are you running

try some 5w40 rotella t6 in it...see if it eats that

change the oil and filter.....get 5qt and fill the filter before you screw it on

put ALL 5 QUARTS IN IT

see how long it takes to drop
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Old 04-30-2014, 10:01 AM   #12
dub1080
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are you tuned for the catless up pipe? that would put the car into a weird mode if you arent because that means the egt sensor isnt reading correctly and that could cause the bad acceleration
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Old 04-30-2014, 07:56 PM   #13
Uncle Scotty
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Quote:
Originally Posted by dub1080 View Post
are you tuned for the catless up pipe? that would put the car into a weird mode if you arent because that means the egt sensor isnt reading correctly and that could cause the bad acceleration
the up pipe wouldnt do **** unless the temp probe was bad...which would cause full rich limp mode which would be glaringly apparent....
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Old 04-30-2014, 11:27 PM   #14
drifterX2013
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I had an 06 STI same sorta issues, had the HG done, massive oil consumption. puffing blue here and there, finally it spun a rod bearing took the engine out I had 7 bent valves, which was causing smoking, and bearings that should of made the crank wiggle out of the block were the reason of massive oil consumption. it was not a cheap fix, basically....like was stated before do a compression test, and a leak down test see where you are gona be at.
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Old 05-01-2014, 12:07 AM   #15
Shiftace420
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Quote:
Originally Posted by drifterX2013 View Post
I had 7 bent valves, which was causing smoking, and bearings that should of made the crank wiggle out of the block were the reason of massive oil consumption.
What? Can you clarify what that means?
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Old 05-01-2014, 12:13 AM   #16
07STifastashell
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You really need a compression test for further diagnosis. I was burning that amount of oil and it turned out to be a crack in the cylinder bore of the actual block. Had slightly low compression in two cylinders and 20% leak down on one of those.
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Old 05-01-2014, 01:22 AM   #17
drifterX2013
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Quote:
Originally Posted by Shiftace420 View Post
What? Can you clarify what that means?
I mean that whoever had the car before me drove the piss out of it....the combustion chamber temperatures got so hot that the tops of the valves started melting and mashing into the valve seats which also caused them to stretch which in turn made them bend, I had next to no compression in 2 cylinders due to most of my valves not seating properly. and because of this my engine smoked blue. which made my oil consumption go WAY up, and having shot rod bearings didn't help, that allows for oil to sneak by and also give low oil pressure. my car also had very light detonation under easy boost due to weird compression im assuming from the chambers not sealing properly. I also had scarring on my cams and cam bearings, from low oil pressure.
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Old 05-01-2014, 01:41 AM   #18
Shiftace420
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I think I understand what you were saying now. The bad bearings were out of tolerance causing the oil pressure drop.

I did not catch that from "bearings that should of made the crank wiggle out of the block were the reason of massive oil consumption"

Thanks for the clarification.
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