2002 Impreza on cold start

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Devils Advocate - 05 Nov 2007 20:57 GMT

02 impreza has a noisey engine, similar to a ticking sound, that goes away
once warm.

Is there a liquid I can put in with an oil change to take this away?

I know I had a Impala with the same issue, when to dealer and got a bottle
of liquid for ticky engines, and puff no more tick. Quiet as a mouse in
fact.

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Todd H. - 05 Nov 2007 21:23 GMT

> 02 impreza has a noisey engine, similar to a ticking sound, that goes away
> once warm.

Likely Subaru's piece of crap hydraulic-only timing belt tensioner.
Tick tick ticky until it's gotten pumped up to full tension.

> Is there a liquid I can put in with an oil change to take this
> away?

Not that I'm aware of.

> I know I had a Impala with the same issue, when to dealer and got a bottle
> of liquid for ticky engines, and puff no more tick. Quiet as a mouse in
> fact.

If it's HLA noise, then perhaps, but likely culprit in our engine is
the timing belt tensioner. My vehicle I believe has had that part
replaced about 5-7 times now.

Aftermarket units are available with a spring backup to the hydraulic
tensioning. Subaru of course hasn't changed their original (and
flawed) design.

--
Todd H.
2001 Legacy Outback Wagon, 2.5L H-4
Chicago, Illinois USA

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Greg - 08 Nov 2007 15:40 GMT

My 02' Impreza has been good for about 20,000 miles since dealer replaced
the tensioner. Also found using too heavy of oil can cause tensioner noise.
I use only 5W30 Castrol GTX in my 02' since one venture into 10W40 caused
noise after sitting for 2 weeks.

>> 02 impreza has a noisey engine, similar to a ticking sound, that goes
>> away
[quoted text clipped - 25 lines]
> 2001 Legacy Outback Wagon, 2.5L H-4
> Chicago, Illinois USA

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Dano58 - 06 Nov 2007 13:48 GMT

On Nov 5, 3:57 pm, "Devils Advocate" <devilsadvocat...@hotmail.com>
wrote:

> 02 impreza has a noisey engine, similar to a ticking sound, that goes away
> once warm.
[quoted text clipped - 4 lines]
> of liquid for ticky engines, and puff no more tick. Quiet as a mouse in
> fact.

Probably the infamous 'piston slap'. See: http://resnet.uoregon.edu/~dwhite/pages/subnoises.html

Dan D
'99 Impreza 2.5 RS (son's)
Central NJ USA

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Devils Advocate - 08 Nov 2007 03:25 GMT

>> fact.
>
> Probably the infamous 'piston slap'. See:
> http://resnet.uoregon.edu/~dwhite/pages/subnoises.html

The link states it affects years 97-99. Mine is 2002 Impreza.
You may be right all the same.

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