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Old 11-09-2001, 08:47 PM   #1
elemental
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Unhappy problem: very bad bad sound. =(

injen used my car as a prototype car for the intake and now there's something wrong, i dont think it is as a result of the intake but it happened while in their possession, just wondering what the problem might be... it doesn't sound very good at all.

my car was making a clacking noise that's coming from somewhere in the middle of the engine bay... it is rpm dependent, the higher the rpms, the faster the sound goes off... but the sound has somehow gone away now and the noticeable difference now without the clacking sound is that the car shakes alot (as opposed to it not shaking at all since the boxer engine is so balanced) but now it shakes a bunch but sound normal.

someone has already told me it might be a spun bearing could this be true, as a result of low oil which i'm not sure should have been the problem since i only changed the oil about 3.5k miles ago, but now that sound is gone so i dont know what he'd say. anyone? would the sound of a spun bearing go away? or is it something else?

thanks

gonna take it to a dealer on monday i guess, cuz i know SOMETHING's wrong, just wanted to know if you guys had a similar problem at all... the car only has about 34k mi. on it anyways
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Old 11-09-2001, 09:37 PM   #2
Richard L.
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Do you get the clacking sound all the time, or do you only get it when the engine is either hot or cold?

--
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Old 11-09-2001, 11:20 PM   #3
elemental
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it was all the time, but now it's gone, unless it takes about an hour's drive to warm it up (yes, i know i shouldnt have driven it, but there was nothing i could do). but then, even if it was something temporary, there's something still wrong with the whole shaking deal and the engine just sounds funny (hard to describe).
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Old 11-10-2001, 01:11 AM   #4
Patrick Olsen
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Make sure you have the stock intake on the car before you take it to the dealer and you should be good to go. I couldn't tell you what the noise is, but with only 34k miles on the car you're well under warranty. Time for a new short block perhaps?

Pat Olsen
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Old 11-10-2001, 01:22 AM   #5
ImprezaRS dot com
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Sounds like the infamous cracked piston - check your oil consumption, take to dealer, cash in your savings bonds...

Larry
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Old 11-10-2001, 02:48 AM   #6
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wow, you guys are being depressingly serious... this intake would be the first power mod i've ever had on it and the pistons are cracking or something of that level... errrrrrrrrrrg, sounds not fun
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Old 11-10-2001, 02:57 AM   #7
Richard L.
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A spun bearing should not cause your engine to shake. I'm guessing you have a bent connecting rod or a broken motor mount.

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Old 11-10-2001, 03:14 AM   #8
HndaTch627
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well a spun bearing WILL make a clicking noise to the point where once the bearing works itself out it could easily make the engine misfire and vibrate.

But it could also be a broken motor mount..is the MIL(CE Light) on?? Yes or no??

jeremy
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Old 11-10-2001, 11:50 AM   #9
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also a leaking timing belt tensioner will cause a knock noise in the engine.
dave
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Old 11-10-2001, 12:53 PM   #10
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Quote:
well a spun bearing WILL make a clicking noise to the point where once the bearing works itself out it could easily make the engine misfire and vibrate.
that's exactly it, and yes, the CEL is on, although it only turned on after it started misfiring and shaking.
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Old 11-10-2001, 01:53 PM   #11
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I have a HUGE crack in my borla header. The engine makes this "clacking" noise while it's cold, but it then goes away at the engine warms up (the steel expands and the crack closes). It has caused a CEL and the engine vibrates noticably because of this (don't ask me why, though....).

Check for exhaust leaks...


--Roy
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Old 11-10-2001, 01:58 PM   #12
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have you had a chance to figure out what code is stored in there??

I rec putting your factory airbox back on and take it to the dealer.

Jeremy
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Old 11-10-2001, 02:23 PM   #13
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yea, that's what i'm going to do, dealer's closed till monday though.
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Old 11-10-2001, 08:56 PM   #14
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i should probably know this but do you guys know what the notch, top mark and bottom mark on the dipstick represent in quarts remaining? the last oil change on the car was done by the dealer for the 30k service, it's been just about 3000 miles since then and if they filled it to 4.7 quarts (spec) and it was a little lower than the low mark when the problem happened (must have started eating oil quicker this week because last week it was about midway between the marks, it would have lost more than 3 quarts im guessing. and i did a search on the board, SOA seems to only care if it eats more than a quarter per 1000 miles so im wondering if i can argue this case or not? thanks.
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Old 11-12-2001, 03:53 AM   #15
elemental
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Quote:
well a spun bearing WILL make a clicking noise to the point where once the bearing works itself out it could easily make the engine misfire and vibrate.
and what does 'work itself out' mean, what is the bearing working out??
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Old 11-12-2001, 04:15 AM   #16
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spins out from between the rod cap and the crank shaft journal.

Jeremy
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Old 11-12-2001, 03:09 PM   #17
Richard L.
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Quote:
Originally posted by elemental
do you guys know what the notch, top mark and bottom mark on the dipstick represent in quarts remaining?
The distance between the top mark and the bottom mark usually represents one quart. If the top mark in your case is 4.7 quarts, then the bottom mark is 3.7 quarts remaining.

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Old 11-12-2001, 04:14 PM   #18
HndaTch627
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yes and with 3.7 qt's remaing and high rev's/hard cornering you could EASILY starve the oil pump.

jeremy
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Old 11-12-2001, 04:52 PM   #19
elemental
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k, well, it wasn't me driving when this happened, i let a company borrow the car to prototype an intake for it and they must have driven the damn thing hard in the 5 miles they put on the clock.... and i'm not sure if i can get them to compensate me or not, i didn't sign anything waiving my rights but nothing to guarantee a working car back either. so.... i have to get some advice on that.

but the car's at the dealer getting checked as we speak, mechanic has like 10 cars waiting before mine so it might be until tomorrow before we know for sure what's wrong.
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Old 11-12-2001, 05:01 PM   #20
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Didn't they tell you what they were gonna do with your car?
Did they ran the car on a dyno, go to the drag strip with a g-tech or what?
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Old 11-12-2001, 06:44 PM   #21
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Just don't tell the dealer about letting someone use your car as a test car. Your engine/powertrain (5 year/60k miles) should cover whatever the problem is.

Good luck with getting it fixed.

-Matt
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Old 11-13-2001, 12:12 AM   #22
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This is kind of off the top of my head, but I think the spec is 4.2 quarts. Please correct me if I'm wrong. My book is out in the glovebox.

Aspen_2.5RS
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Old 11-13-2001, 03:13 AM   #23
Richard L.
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Yes, spec is 4.2 quarts for MY00-01 2.5RS. I'm not sure about MY98 2.5RS though. If it's the same, then 4.7 quarts is too much oil, which could cause foaming and ultimately reduce lubrication to bearing surfaces.

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Old 11-13-2001, 05:11 PM   #24
elemental
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it says 4.7 in my manual, so i guess they take different amounts.
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Old 11-13-2001, 08:38 PM   #25
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the clicking sound may be a bad lifter. have you been running it like a teenager?
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