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Old 02-19-2011, 07:19 PM   #1
Dsilko
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Default Unsure about my RS

I bought my 05' RS from a dealership in october of 09' with 80k some miles on it. The previous owner who obviously gave it to the dealership on trade had a CF hood(w/ scoop), cf trunk, ram air intake, and a 4 piece body kit(bolt on type, it did not actually replace the bumpers and skirts). He put some ricer cat-back on it and also has some cheap black MR rims. I bought the car before I spent a year learning on this site. I only tell you this because in my opinion, the previous owner obviously did not know what he was doing to the car. Which worries me.

I put the stock intake back on(until i can build a hybrid), stock hood and trunk, removed the body kit, had to replace the front sway links(put on kartboys), and rear struts are slowly leaking but have been holding up so far. I noticed the car was burning oil as well because i had to clean the throttle body and egr valve a couple times, as well as having to put in another quart between changes. In addition to this, there is some kind of engine noise that I am decently certain is not normal on our cars. It's kind of a tick noise, but when I listen in the engine bay, it just sounds like loud valve clatter. It's kind of a "ts ts ts ts ts ts" that increases with gas pedal depression. However the noise is pretty faint, and tough to hear over the melon sized catback.

I am now coming up on 100k(I put about 20k in 2 years) and am just concerned of how reliable I can expect my car to be. I can't put my finger on what the engine noise is, but the evidence I stated above shows the previous owner treated the car pretty poorly(i.e. ram intake is bad, seems to have driven it hard(derived this conclusion from suspension problems and oil burning). Should I be concerned about something serious going on with this car? I am a student and cannot afford a blow like that. So I'm debating on selling the car and getting something that probably wasn't abused(thinking maybe another 05 rs or 06 07 2.5i's) Just looking for some input, my luck with noob/other forum areas is most the people compare it to their turbo models, so hoping i can get a better perspective from you guys. Thanks a ton, as this has had me worried for some time.
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Old 02-19-2011, 07:32 PM   #2
yarrgh
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If it's been serving you well, there's probably nothing majorly wrong with it. Since you're at 100K, start saving/studying for a timing belt change, which is recommended at 105K.
The tick you're hearing could be as simple as valve lash, pretty easy to adjust. It could also be the timing belt tensioner. It could be (long stretch) main or rod bearings starting to go. Next time you drain the oil, check for shiny copper glitter(have a bright light to view). But, that's a stretch.

The oil burning sounds about right....kinda. Many cars burn oil at about 1 quart per oil change, but it's not something one would desire to happen. Either way, it's not necessarily bad or indicative or catastrophic failure, just keep an eye on it. The oil in your throttle body may have come from the old intake or from the normal breather tubes. How's the PCV valve? Have you been keeping up on normal maintenance?
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Old 02-19-2011, 07:45 PM   #3
Subyroo2.5
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The tick could also be the fuel injectors.
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Old 02-19-2011, 08:21 PM   #4
ScottyB
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the noise sounds like you may have a leak at the exhaust manifold. it's going to be louder as you put the pedal down from the increased air flow. could be as simple as tightening it down at the connections or looking for a crack.

by burning, do you mean simply consuming oil, or when you start it up or take off from a stop, does it puff smoke? our boxers do consume oil (not all, but many) and its not necessarily a big deal. i go through a quart every 5k miles and it's been that way for years. still has great power, drives fine. puffing smoke could be a number of other things.
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Old 02-19-2011, 09:02 PM   #5
Dsilko
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It has been doing okay, it has had chronic idling problems, first had to clean egr, then throttle body, then it was ok. But then putting the stock intake on it started to get a little low again around 500.

The dealership had already done the timing belt about around 80k...once again i'm assuming it went early being driven hard.

As far as the tick goes...Is adjusting for valve lash something I could do myself? never heard of that before though. I have run seafoam through the gas tank to clean injectors and did not notice a change in sound. Sometimes the tick isn't there, it's only after i've been driving for 5-10 minutes? I can't say this is completely accurate, but I know there are times where i can't hear it, and other times I can. I'm afraid to take it to dealer/shop to have them address the noise, but i'm afraid that's just going to be throwing away money, since their guess is probably as good as most people's on this forum. What about water pump/bearings, because you replace that at 105 too right?

As far as burning oil, I just meant consuming. Which brings up a small question, oil recommendations? I've been using synthetic 5w30, used an additive this last time to see if it helped the consuming issue. which it did seem to actually, i'm just afraid it might be thicker than what the engine would like.

Lastly, I guess I will check my oil for copper glitter just to be sure, I have to change soon anyway.

Thanks for your help so far.
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Old 02-19-2011, 09:08 PM   #6
Dsilko
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my mpg has been anywhere from 22(during winter, adding warmup time in the morning) to 27 in summer(easy driving, mostly highway commutes to the university)

sound ok?
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Old 02-20-2011, 12:27 PM   #7
Sir-Knight
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pretty normal if you ask me.... I've seen my engine burn anywhere from .3qt to a full qt between changes... I went from dino oil to start with (burned most) to amsoil 5w30, (about .75 qt) to amsoil xlt 5w30 and burned almost nothing on my last change.

subarus have noisy valvetrains, if you can hear it more in the cold than when it's warmed up, it's nothing. My car sounds pretty hideous in the extreme cold of the canadian winter.
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Old 02-20-2011, 01:04 PM   #8
Dsilko
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I meant that it doesn't seem that the noise is there at first, but then is noticeable after 5-10 minutes.

But obviously nobody has said I have anything major to worry about, so maybe I'll just stay with this car and just try to take care of it.
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Old 02-23-2011, 08:35 AM   #9
spinnaker226
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Quote:
Originally Posted by Subyroo2.5 View Post
The tick could also be the fuel injectors.
this. subaru is notorious for having weird clicks and clacks in higher mileage cars.
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Old 02-23-2011, 03:42 PM   #10
EdHilario
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Headers are also prone to ticking. Whether it be the heatshield or the thin metal from aftermarket ones that are exposed to cold. It almost sounds like a sewing machine.
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Old 02-24-2011, 04:49 PM   #11
Dsilko
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The sound just gives me an internal impression. The noise almost makes me feel like the piston rings are just grinding on the cylinder walls...which isn't happening, oil is fine and the car runs very well minus some minor idling inconsistencies. I took off some of the heat plating on my exhaust manifold already because of bad rattling because I was not enjoying my car sounding like junker. That fixed the rattle. But the noise just doesn't seem to be coming from there. The sewing machine analogy is interesting though.

The part the I don't like about this "unusual" noise that I'm hearing, is that if I sat in someone else's 05 rs or similar setup impreza, I guarantee their engine would not sound the same. This basically just gives me the intuitive sense that something is not working 100% like it should on my own engine, since it doesn't sound like everyone elses identical model(not that i have actually rode in someone else's rs). The question is whether this is an actual problem that actually qualifies as being in need of service. Otherwise I believe I have to just deal with it.

Part of my quandary, is that I intend to slowly mod the car. Looking for just the slight boost in power(used el headers, high flow exhaust/cats, hybrid intake, and maybe a tune), as well as good suspension mods to make this car enough fun for me to be satisfied and not want to buy an STI every day I drive it. But i don't want to be throwing money at this car if it's just going to fail on me.
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Old 02-24-2011, 09:33 PM   #12
haze89
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.........
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Old 02-24-2011, 10:21 PM   #13
ScottyB
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if you're still concerned, consider doing a used oil analysis. it isn't a catch-all solution but it will at least give you an idea of whether there is high metal content in your oil. depending on the type of metal you may be able to ascertain if a particular part of your engine is in trouble. if not, at the very least you get to see the general health of things and possibly how much longer you can extend your oil change intervals, for about $30 a test.
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Old 02-24-2011, 10:56 PM   #14
GrundleJuice
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a UOA should be one of a few things you should do anytime you buy a used car
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