Welcome to the North American Subaru Impreza Owners Club Wednesday October 1, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 03-31-2005, 01:30 PM   #1
Aaron'z 2.5RS
Scooby Guru
 
Member#: 1026
Join Date: Mar 2000
Chapter/Region: MWSOC
Location: Hickigan
Vehicle:
'00 RS/WRX Stg5
'98 RS Stock

Question Question about "start-up" knock..

Hi all,

I have a question about dredded cold start knock.....

My car a 99' RS has it (sounds like it's low on oil) only when i first start it in the morning, and goes away after less then a minute. (like the oil finaly made it around the motor) and it's gone the rest of the day...

Well my moms car has the same problem, but it lasts MUCH longer, like 10min!!!! sometimes...!! And she has a 02' forester...

I've read other posts (done some searching) reguarding "similar" problem, but none of them seem to voice this particular problem.......

I've seen things about piston slap, and valve lash.... is there something more to this... it's really bothering her, and me as well.....

Thanks very much,
Wind
* Registered users of the site do not see these ads.
Aaron'z 2.5RS is offline   Reply With Quote
Old 03-31-2005, 01:35 PM   #2
x-ingover
Scooby Newbie
 
Member#: 50848
Join Date: Dec 2003
Location: San Antonio, Texas
Vehicle:
2002 2.5 TS
Sedona Red

Default

Changed the timing tensioner yet?? My '02 TS did the same thing, and it was the tensioner...
x-ingover is offline   Reply With Quote
Old 03-31-2005, 06:45 PM   #3
RSimport
Scooby Specialist
 
Member#: 24718
Join Date: Sep 2002
Chapter/Region: MAIC
Location: Potomac MD
Vehicle:
05 impreza RS
white

Default

when I bought my 99 RS the owner of the place told me that in the ej25 motor they changed the piston design to improve gas mileage. And it causes this sound until the engine gets up to temp. Just my 2cents
RSimport is offline   Reply With Quote
Old 03-31-2005, 07:37 PM   #4
Aaron'z 2.5RS
Scooby Guru
 
Member#: 1026
Join Date: Mar 2000
Chapter/Region: MWSOC
Location: Hickigan
Vehicle:
'00 RS/WRX Stg5
'98 RS Stock

Default

Quote:
Originally Posted by x-ingover
Changed the timing tensioner yet?? My '02 TS did the same thing, and it was the tensioner...

Nope, never thought it could be such a thing.... i'll look into it..

Thank you, keep the ideas commin...

AaRoN
Aaron'z 2.5RS is offline   Reply With Quote
Old 03-31-2005, 08:46 PM   #5
Gerkins31
Scooby Newbie
 
Member#: 52337
Join Date: Jan 2004
Location: New Orleans
Default

Tensioner? odd, I never would have thought of that either.
Gerkins31 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Important Question About Hydra Knock Threashold diplo12 Other Engine Management 13 07-26-2006 12:57 AM
what does OT think about "trading up" with cars happasaiyan Off-Topic 17 02-19-2005 11:03 AM
Questions about Rod Knock and Detonation noise.... BoostedAWD Factory 2.0L Turbo Powertrain 9 10-08-2003 09:40 AM
Question about a knock type of sound fpa1974 Factory 2.0L Turbo Powertrain 1 07-01-2002 07:47 PM
newbie question about timing and knock desiwrx02 Newbies & FAQs 1 06-28-2002 10:12 AM


All times are GMT -4. The time now is 03:03 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.