epm88 Posted October 21, 2015 Share Posted October 21, 2015 Hey Im new here. This is my first turbo Subaru and newest Subaru i have had. I just picked up an 05 legacy gt limited 2.5 turbo auto. Its pretty well stock all but a few things, spt air intake, stainless cat back exhaust. Aftermarket boost gauge. The car has 135k on it. New plugs new timing belt. Heres my questions/concerns: From day one i had a bit of a rattle at idle coming from the turbo area, i have been told that could be the waste gate. My aftermarket boost gauge flutters like crazy under light throttle/ slow speeds with no boost Since day one. Few weeks ago my girlfriend was driving it and was put into a situation where she had to accelerate hard up a hill for a short period of time and we got a flashing check engine light with a cyl 4 misfire code that went off after she quit accelerating. I cleared the code it never came back. Just recently i noticed a low shaky idle and it died once going into reverse also my rattle at idle disappeared. I cleaned the MAF with no change. Any input or thought is greatly appreciated Thank you. Link to comment Share on other sites More sharing options...
blcnghtsky Posted October 21, 2015 Share Posted October 21, 2015 Typically the best thing to do for a Legacy of that age is to check the overall health of the engine and turbo components. Seeing as it was modified indicates it may have had some hard pulls and seen redline in its time. Look into doing a leak down/compression test, check the turbo for shaft play and any movement, inspect all turbo components for any signs of failure. Search for BANJO BOLTS inspection and removal. These cars are a lot of fun... Just have to make sure they are healthy as well. Good luck in discovering the issue. Link to comment Share on other sites More sharing options...
epm88 Posted October 21, 2015 Author Share Posted October 21, 2015 I just pulled the intercooler off and there is a fairly decent amount of oil in it and in the throttle intake elbow off the intercooler there is a pool of oil. :/ Link to comment Share on other sites More sharing options...
Merc6 Posted October 22, 2015 Share Posted October 22, 2015 What's your location, maybe someone local can help you out? 2005 Satin White Pearl Subaru Legacy 2.5 GT Unlimited 5EAT (Project Car) 2019 Agate Black Ford Explorer XLT 4WD (DD) Link to comment Share on other sites More sharing options...
battelready Posted October 22, 2015 Share Posted October 22, 2015 I just pulled the intercooler off and there is a fairly decent amount of oil in it and in the throttle intake elbow off the intercooler there is a pool of oil. :/ That really dosnt sound too good. Turbo might be on its way out. I bought an auto be more involved in my uninvolvedness . 200k+ Club If you can't blind them with brilliance, baffle them with bullshit. My high mileage turd. Link to comment Share on other sites More sharing options...
Max Capacity Posted October 22, 2015 Share Posted October 22, 2015 Stop driving the car, as you have. Pull the down pipe and check the turbo for shaft play up/down, in/out. If you feel any, replace the turbo. if and when it blows it will put metal into the oil system and take out the next turbo. PM JmP6889928 he's our "go to guy" for turbo rebuilds and or replacement. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
turboboost Posted October 22, 2015 Share Posted October 22, 2015 The whole situation doesn't sound very reassuring. Your turbo may be going, if not already gone, and if you've been driving around with a blown turbo, there's a good chance your entire system is contaminated with tiny metal shards. Do a compression test across all cylinders, pull the downpipe to examine the state of the turbo, and pull the oil pan to check for metal bits/contamination. How long have you had the car, and did you buy it from a dealer or private party? If the former and you are within a certain frame, you may be protected by lemon laws. Good luck. Link to comment Share on other sites More sharing options...
epm88 Posted October 22, 2015 Author Share Posted October 22, 2015 The turbo builds/holds boost fine drives fine, i changed the pcv valve, it doesn't rattle but is movable if you push on it(I disassembled the old one). I eventually will do a compression test. May send my oil out for analyst. Last oil change there were no signs of metal shavings visibly. I do notice a bit of blue smoke upon startup out the tail pipe if it sits for a bit. I Recorded a couple videos of the rattle one as you rev it and let off and one as you shut it off Link to comment Share on other sites More sharing options...
battelready Posted October 22, 2015 Share Posted October 22, 2015 The turbo builds/holds boost fine drives fine, i changed the pcv valve, it doesn't rattle but is movable if you push on it(I disassembled the old one). I eventually will do a compression test. May send my oil out for analyst. Last oil change there were no signs of metal shavings visibly. I do notice a bit of blue smoke upon startup out the tail pipe if it sits for a bit. I Recorded a couple videos of the rattle one as you rev it and let off and one as you shut it off Thing is , you arnt supposed to have oil or rather a pool of oil anywhere near the turbo to manifold tract. Best bet as as they said above, check the turbo or else when it goes it'll bring the motor with it. I bought an auto be more involved in my uninvolvedness . 200k+ Club If you can't blind them with brilliance, baffle them with bullshit. My high mileage turd. Link to comment Share on other sites More sharing options...
epm88 Posted October 23, 2015 Author Share Posted October 23, 2015 https://vimeo.com/143326365 Link to comment Share on other sites More sharing options...
battelready Posted October 23, 2015 Share Posted October 23, 2015 https://vimeo.com/143326365 Wait im slow, what am i looking at, Is that the turbo heat shield? That sounds like heat shield rattle but it could bee worse. I bought an auto be more involved in my uninvolvedness . 200k+ Club If you can't blind them with brilliance, baffle them with bullshit. My high mileage turd. Link to comment Share on other sites More sharing options...
epm88 Posted October 23, 2015 Author Share Posted October 23, 2015 Yes thats the turbo heat shield. I cant find any loose heat shields, i was thinking it was a waste gate rattle? Link to comment Share on other sites More sharing options...
epm88 Posted October 23, 2015 Author Share Posted October 23, 2015 https://vimeo.com/143331836 Heres as we shut it off. Almost sounds like you can hear the turbo spool down after the rattle sound Link to comment Share on other sites More sharing options...
ttnio Posted October 23, 2015 Share Posted October 23, 2015 Hopefully you will get your problems fix. Take it to a mechanic that works with Subaru engines. It could be a simple problem. Welcome ! Link to comment Share on other sites More sharing options...
Merc6 Posted October 23, 2015 Share Posted October 23, 2015 the weld on my STi up top heatshield broke and its loose. Possibly that too. 2005 Satin White Pearl Subaru Legacy 2.5 GT Unlimited 5EAT (Project Car) 2019 Agate Black Ford Explorer XLT 4WD (DD) Link to comment Share on other sites More sharing options...
epm88 Posted November 1, 2015 Author Share Posted November 1, 2015 Well i performed a compression test on it, found out why i have a weird idle and oil in the intake :/ i did the test cold but im pretty sure a cylinder with a 70 psi difference from the rest isnt going to change when warm lol. Next comes the tear down and we will see what exactly happened. Oh its cylinder 4 too so that explains my misfire code Link to comment Share on other sites More sharing options...
Max Capacity Posted November 1, 2015 Share Posted November 1, 2015 Either burnt exhaust valves or broken ring land. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
epm88 Posted November 1, 2015 Author Share Posted November 1, 2015 With the amount of oil in the intake i think its a ring land. The old paper over the tail pipe trick makes me think its not a valve either. Link to comment Share on other sites More sharing options...
epm88 Posted November 1, 2015 Author Share Posted November 1, 2015 I'd do a leak down test but I'm not sure how to make sure the valves are closed on these engines. All my engine work has been on Chevy or Oldsmobile v8s lol Link to comment Share on other sites More sharing options...
epm88 Posted November 2, 2015 Author Share Posted November 2, 2015 Im not even going to bother with the leak down test, if you loosen the oil cap it bounces around with pressure behind it. Im just going to pull it. Hopefully its salvageable and i can take it to a machine shop and get it bored a bit over and get it back together. Link to comment Share on other sites More sharing options...
blcnghtsky Posted November 2, 2015 Share Posted November 2, 2015 Sorry to hear the news. I guess take solace in the fact you are now on the path of diagnosing the problem and fixing it to get it back on the road. Who knows, maybe an opportunity to do some internal upgrades to your liking. Link to comment Share on other sites More sharing options...
Max Capacity Posted November 2, 2015 Share Posted November 2, 2015 Im not even going to bother with the leak down test, if you loosen the oil cap it bounces around with pressure behind it. Im just going to pull it. Hopefully its salvageable and i can take it to a machine shop and get it bored a bit over and get it back together. http://people.csail.mit.edu/ilh/vacation/ you might be able to use them. Read my Click Here link about an ej257 and other info. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
epm88 Posted November 5, 2015 Author Share Posted November 5, 2015 Well i believe im going to start taring into it Saturday, im hoping but doubt that its just a head gasket because there is definitely oil around the head on that cylinder. The compression in the crank case makes me think differently. ill really know when i pull it a part. Ill keep you all updated Link to comment Share on other sites More sharing options...
Max Capacity Posted November 6, 2015 Share Posted November 6, 2015 Have you done your homework on the cam bolts ? They can be a real PITA. I had the machine shop remove the heads. They are doing the rebuilding of them anyways. They just got the tools from the dealership to remove the cam bolts. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
epm88 Posted November 7, 2015 Author Share Posted November 7, 2015 Im not going to disassemble the heads ill leave that to the machine shop Link to comment Share on other sites More sharing options...
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