Suby Shopping & Maintenance/Warranty Buying a Subaru? Buying, negotiating, financing, insurance, etc. Maintenance/Warranty topics can be discussed here too.

ticking during idle and drive

Thread Tools
 
Search this Thread
 
Old Nov 18, 2005 | 03:29 PM
  #1  
DEMENTEDWRX's Avatar
Thread Starter
Registered User
 
Joined: Nov 2005
Posts: 343
From: Raider Nation
Car Info: '06 Lexus IS
ticking during idle and drive

every now and then, the engine sounds like its ticking while its idling or when im accelerating. its not really all that loud. im sure its normal... but i wanted to make sure its not an indication that the valves are bent or anything like that.

i was thinking about taking it to a dealership to make sure i wasnt trippin... but i dont want to risk the chance of them breaking something. haha
Old Nov 19, 2005 | 05:07 AM
  #2  
9Vapors's Avatar
Registered User
 
Joined: Apr 2005
Posts: 238
From: New York
Car Info: 02 WRX
Its probably your injectors.
Old Nov 19, 2005 | 03:47 PM
  #3  
DEMENTEDWRX's Avatar
Thread Starter
Registered User
 
Joined: Nov 2005
Posts: 343
From: Raider Nation
Car Info: '06 Lexus IS
the injectors would tick that loud? hmmm weird.
Old Nov 19, 2005 | 04:20 PM
  #4  
VIBEELEVEN's Avatar
VIP Member
iTrader: (2)
 
Joined: Oct 2004
Posts: 5,120
From: Napa, Ca.
Car Info: 03 WRX
I think t's just the way subarus and other horizontaly opposed engines sound.Evere heard an old vw beetle that didn't "tick"? Porsches' sound very similar also.
Old Nov 19, 2005 | 07:44 PM
  #5  
meilers's Avatar
VIP Member
 
Joined: Mar 2003
Posts: 2,023
From: Phoenix, AZ
Car Info: Subaru Impreza WRX 2002
No, VWs and 911s tick because they use timing chains, not belts.

The sound you hear is the lifters over the valves. You should only hear it when the oil is cold, before the engine reaches 80c in coolant temp.
Old Nov 20, 2005 | 08:47 AM
  #6  
DEMENTEDWRX's Avatar
Thread Starter
Registered User
 
Joined: Nov 2005
Posts: 343
From: Raider Nation
Car Info: '06 Lexus IS
Originally Posted by meilers
No, VWs and 911s tick because they use timing chains, not belts.

The sound you hear is the lifters over the valves. You should only hear it when the oil is cold, before the engine reaches 80c in coolant temp.

yeah i figured its the lifters... i guess it ticks louder because of the synthetic oil.

i just wanted to make sure its normal. hehe
Old Nov 20, 2005 | 07:13 PM
  #7  
VIBEELEVEN's Avatar
VIP Member
iTrader: (2)
 
Joined: Oct 2004
Posts: 5,120
From: Napa, Ca.
Car Info: 03 WRX
Originally Posted by DEMENTEDWRX
yeah i figured its the lifters... i guess it ticks louder because of the synthetic oil.
Mine ticks constantly, I noticed it ticked more once I changed the oil too? I wonder why that is.
Old Nov 21, 2005 | 01:22 PM
  #8  
DEMENTEDWRX's Avatar
Thread Starter
Registered User
 
Joined: Nov 2005
Posts: 343
From: Raider Nation
Car Info: '06 Lexus IS
Originally Posted by VIBEELEVEN
Mine ticks constantly, I noticed it ticked more once I changed the oil too? I wonder why that is.
weird, huh? i dunno man... im just not used to all the ticking. haha
Old Nov 21, 2005 | 02:14 PM
  #9  
subie OCD's Avatar
Registered User
iTrader: (11)
 
Joined: Aug 2005
Posts: 5,808
From: Concord
Car Info: 04 STi
Mine was ticking pretty loud a few mornings ago when it was REALLY cold out. It went away after a few minutes. My old 84 wagon gl made the same noise when cold
Old Nov 21, 2005 | 02:39 PM
  #10  
VIBEELEVEN's Avatar
VIP Member
iTrader: (2)
 
Joined: Oct 2004
Posts: 5,120
From: Napa, Ca.
Car Info: 03 WRX
I'm not too sure about the whole timing chain thing. I've never heard a boxer engine that didn't tick, and I've never heard a timing chain that did tick, unless there was something wrong with it. I've owned old school hot rods since I was 17 and never heard a timing chain that made a "ticking noise".
Old Nov 21, 2005 | 02:41 PM
  #11  
VIBEELEVEN's Avatar
VIP Member
iTrader: (2)
 
Joined: Oct 2004
Posts: 5,120
From: Napa, Ca.
Car Info: 03 WRX
I think it has to do with the engine configuration, and to a lessser extent, the injectors.
Old Nov 21, 2005 | 06:08 PM
  #12  
meilers's Avatar
VIP Member
 
Joined: Mar 2003
Posts: 2,023
From: Phoenix, AZ
Car Info: Subaru Impreza WRX 2002
Vibe:

https://www.i-club.com/forums/showth...icking+lifters

We've already been down that road Yes, it is the engine configuration that makes that sound happen (lifters getting ahead of the valvetrain); one other possible source is the HLA (hydraulic lash adjusters) compensating for the slightly less-than-ideal conditions of a cold engine. The boxer engine is designed to be happy with 80c coolant and 800c exhaust temps, and it is crabby until it gets there.

I spent much of my youth arms-deep in the engine bay of several Porsche 911s and I rebuilt an air-cooled VW engine from scratch. The chains most definitely make noise on those two engines; in fact the chains are what give both engines (along with valve clatter and very, very short headers) their distinctive sound. I'm talking about '80s-era engines (1976 for the VW); they may have definitely removed the sound in more recent engines.
Old Nov 21, 2005 | 10:52 PM
  #13  
VIBEELEVEN's Avatar
VIP Member
iTrader: (2)
 
Joined: Oct 2004
Posts: 5,120
From: Napa, Ca.
Car Info: 03 WRX
Originally Posted by meilers
I'm talking about '80s-era engines (1976 for the VW); they may have definitely removed the sound in more recent engines.
Thanks for explaining. New porsches still tick.
Old Nov 22, 2005 | 09:17 AM
  #14  
subie OCD's Avatar
Registered User
iTrader: (11)
 
Joined: Aug 2005
Posts: 5,808
From: Concord
Car Info: 04 STi
Originally Posted by meilers
The boxer engine is designed to be happy with 80c coolant and 800c exhaust temps, and it is crabby until it gets there.
yeah, there is a BIG difference in the way my car acts when the engine is cold, and when its warm!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ckwake135
Suby Shopping & Maintenance/Warranty
18
Dec 14, 2005 10:58 PM
newyorkreload
Sacramento & Reno
1
Jul 6, 2005 09:08 AM
turborambler
Engine/Power - EJ20T (pre-2006 WRX and JDM)
2
Dec 6, 2004 08:07 PM
soundwave
Bay Area
51
Jul 10, 2004 05:31 PM
turbo_j
Engine/Power - EJ20T (pre-2006 WRX and JDM)
1
Jun 13, 2003 11:26 PM




All times are GMT -7. The time now is 06:56 AM.