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Old 04-16-2004, 09:51 AM   #1
Jejunum
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Default loud ticking sound.

ive got a loud ticking sound in my car that usually go away after 15 minutes. i want to take it to the dealer but im scared of the mods i have. any ideas on what it might be? (ive got borla
headers, cobb cai, stromung catback & lw pulley).

ive read it might be valve lash (dunno what that is) or a maladjusted tensioner.

how can i check these?

thanks!

i found this tom & ray column...what do you guys think?

Dear Tom and Ray: I own a '97 Subaru Outback wagon with 60,000 miles on it. When I start it up in the morning, even if the weather is on the warm side, the engine makes a loud ticking noise for about 15 minutes of driving. What can be done about this problem? -- Peter

Tom: Ticking, huh? Well, if you've eliminated the ex-wife/ pyrotechnic device possibility, I'd say you have bad lifters, Peter.

Ray: We see this problem on lots of cars -- Subarus, Volkswagens, Chryslers and Mazdas, to name a few. My guess is that your hydraulic lifters aren't holding their oil pressure overnight. During the night, the oil drains down out of them and is replaced by air. Then, when you start the car the next morning, it takes a long time for them to purge themselves of that air and get refilled with oil.

Tom: And it's not good for your engine, especially if it's clacking for 15 minutes every day. When you have extra lash in the valve train like that, you're also whacking the cam lobes and valve stems, and all of that banging eventually is going to turn your engine to junk.

Ray: So I'd definitely go back to your Subaru dealer and complain. The first thing they should do is check for a weak oil pump, which can also cause or exacerbate this problem. But assuming the pump is OK, maybe they have a newer design for the lifters that doesn't drain down as readily. Or, at the very least, maybe they'll install some lifters that don't have 60,000 miles on them.
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Old 04-16-2004, 11:25 AM   #2
White 2.5rs
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you dont have hydraulic lifters
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Old 04-16-2004, 12:22 PM   #3
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Quote:
Originally posted by White 2.5rs
you dont have hydraulic lifters
hey well thats good to know

any suggestions on whats going on?
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Old 04-16-2004, 12:53 PM   #4
Section 8
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Valve lash is the distance between the end of the lifter and the end of the valve stem. To check this you need to take the valve covers off and with a feeler gauge measure the gap between the two taking care to align the crankshaft to different positions to have the proper position of the cam when measureing each individual cylinder.

The belt tensioner is hydraulic and is not adjustable (it adjusts itself). I don't know hoe to specifically eliminate or confirm if a tensioner is problematic. This is likely not your problem if the sound goes away.

The sound may also be piston slap. THis is definitly a manufactureing problem (they put to small of a piston in the bore), and before it has a chance to heat up when cold, the piston rattles in the cylinder. When it is warm, the piston has expanded enough to stop ratteling.

Is the ticking worse on cold days?

cheeRS,

Greg
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Old 04-16-2004, 01:11 PM   #5
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Quote:
Originally posted by Section 8
Valve lash is the distance between the end of the lifter and the end of the valve stem. To check this you need to take the valve covers off and with a feeler gauge measure the gap between the two taking care to align the crankshaft to different positions to have the proper position of the cam when measureing each individual cylinder.

The belt tensioner is hydraulic and is not adjustable (it adjusts itself). I don't know hoe to specifically eliminate or confirm if a tensioner is problematic. This is likely not your problem if the sound goes away.

The sound may also be piston slap. THis is definitly a manufactureing problem (they put to small of a piston in the bore), and before it has a chance to heat up when cold, the piston rattles in the cylinder. When it is warm, the piston has expanded enough to stop ratteling.

Is the ticking worse on cold days?

cheeRS,

Greg
thanks!
the sound is worse on cold days. after 15-20 minuutes of driving it is almost always gone. what should i tell a dealership if i take
this in.
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Old 04-16-2004, 01:11 PM   #6
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Sounds like a timing belt tensioner. I had to replace one on my car and if it is. It's a warranty item plan and simple. Your mods will not and should not efect that. This is a know problem with the EJ25's timing belt tensioner. Here is a picture of my bad tensioner.

The pin is holding the spring loaded shaft that pushes against the case to put tension on the belt. It's also oil filled and is like a small shock to dampen any bounce or any slack changes. What happens is the seal on the shaft goes bad and the oil leaks out and no longer dampins it. What your your hearing the shock bottoming out on the case. Get the dealer to fit it. They should not get you any **** about your mods.
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Old 04-16-2004, 01:28 PM   #7
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if this timing belt tesnioner has gone bad...could it have cauzed any permanent damage on anything?

ok scheduled an appointment @ 6pm on thursday next week. when i said it was suggsted that it could be a timing belt tensioner they got all defensive. who told u that!?

Last edited by Jejunum; 04-16-2004 at 01:34 PM.
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Old 04-16-2004, 01:31 PM   #8
Patrick L
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Quote:
Originally posted by Jejunum
if this timing belt tesnioner has gone bad...could it have cauzed any permanent damage on anything?
No, just as long as you take care of it soon.
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Old 04-16-2004, 08:51 PM   #9
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i dont think its that...
im pretty sure its valve lash
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Old 04-17-2004, 02:27 AM   #10
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I had pretty bad ticking when the engine was cold and when I took it to the dealer they found excessive piston slap and gave me a new short block. I only have an intake and short shifter but they gave me no hassles at all with them.
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Old 04-17-2004, 02:40 AM   #11
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Quote:
Originally posted by mike270
I had pretty bad ticking when the engine was cold and when I took it to the dealer they found excessive piston slap and gave me a new short block. I only have an intake and short shifter but they gave me no hassles at all with them.
wow awsome; i have headers, catback, and lw pulley though :/

it probably wont do it when i take to them (warm afternoon; after 30 minutes of driving)
yargh
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Old 04-17-2004, 05:06 PM   #12
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Quote:
Originally posted by Jejunum
it probably wont do it when i take to them (warm afternoon; after 30 minutes of driving)
yargh
Leave it overnight and be present the next day when they start it.
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Old 04-17-2004, 05:23 PM   #13
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Quote:
Originally posted by Albert
Leave it overnight and be present the next day when they start it.
not too familar with dealership policy. in general will they give me a loaner? i have a job that i need to get too!
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Old 04-17-2004, 05:52 PM   #14
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It's depends on the service dept policy, call and ask.

Most dealerships here run a courtesy van to aviod the need for loaners.
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Old 04-26-2004, 09:45 PM   #15
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well subaru of beechmont (cincy) said that they couldnt hear anything - lead tech looked at it with Stethoscope and couldnt hear anything (when the car was warm)

decided not to leave it there that day; hopefully find some time and a ride and leave it there overnight :/


atleast the problem is documented now i guess
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