Subaru: 04 WRX pinging

ummmm.


More details please.

What model?

What size engine?

What country are you in?


"Mike M. Miskulin" wrote:
 

If you are thinking of 'rattling' or 'knocking' engine sound, that
happens to me on cold (it doesn't have to be really cold!) mornings.
Sounds like a diesel engine. I drive '02 WRX wagon. 22000 miles. Can't
find a proper explanation except oil characteristics on low temperatures.
It started to happen at some 12000 miles. I try to keep engine running
idle for approx. 3-5 minutes to warm it up a little bit but it doesn't
seem to help. The sound dissapears after some 2-3 miles of driving.
Services are done by certified Subaru dealer service with oil change on
every 3500 miles.

In article <69.154.206>,
net says... 

In article <69.154.206>, Mike M. Miskulin
<net> wrote:
 

I have an 04 STi that does not knock when started cold.
It has only been down in the mid 40s here so far and
I let it idle for 90 seconds before driving. It will knock
a little if I accidentally shift from 2nd to 5th instead of 3rd.

Under no circumstances should it knock at idle.
If it were mine, I would have it spend the night at a dealer
immediately.

While pondering the Universe, com (John Coyote) wrote
<181120031932029364%com>:
 

This is in regards an 04 wrx wagon in the states.

And in retrospect, pinging might be the wrong word, it sounds
more like valve tapping, and only does this as I said the
first 10 minutes and is only really audible at idle and low
speeds. I suppose I could start the car and idle it and time
how long it takes to go away to be more exact.

But its most definitely not engine knock or run-on. I found
one item on google that suggests checking the plugs are
properly connected, but this is a 6 week old car.

It could just be the boxer engine rumble.

Is this your first flat engine car?


"Mike M. Miskulin" <net> wrote in message
news:69.154.202... 

net (Mike M. Miskulin) wrote in message news:<69.154.202>... 

it's probably piston slap.

very common complaint re: the boxer engine.

ken

Timing belt tensioners cause this type of noise. eddie
"Jon" <net> wrote in message
news:jgEub.78716$gnilink.net... 
wrote 

I'm not sure the tensioner OR the piston slap is as prevalent in the WRX
as the 2.5l . I'd try to confrim that by searching/asking at
www.nasioc.com or usmb.net . Woldn't want to dismiss it if it's
something that needs attention.(the slap probably not, the tensioner
yes. The slap will usually decrease as engine approaches operating temp.
some tensioners do , others are reported to be noisy all the time.)


Carl
1 Lucky Texan


Ken Gilbert wrote: 


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