Audi Original "S" Cars Discussion forum for the Audi Audi Ur S4, Ur S6, S2 & RS2

Detonation with OLD Gas?!

Thread Tools
 
Search this Thread
 
Old 06-23-2004, 07:16 PM
  #1  
AudiWorld Super User
Thread Starter
 
cpayne's Avatar
 
Join Date: Sep 2000
Posts: 9,705
Likes: 0
Received 0 Likes on 0 Posts
Default Detonation with OLD Gas?!

Gents..my car has been sitting idle for nearly 4 months...today while getting on her a bit I got audible detonation w/ window down and she cut out like nearly the fuel pump was shutting off. Now the gas is nearly 4 months old so I filled up w/ 1/2 tank (full) of prem and added some octane boost but still is cutting out. Perhaps didnt drive her enough only like 5-10 minutes after fill-up until I parked her..

Thoughts?
Old 06-23-2004, 07:21 PM
  #2  
AudiWorld Super User
 
TurboJew's Avatar
 
Join Date: Nov 2002
Location: New York, NY
Posts: 10,916
Likes: 0
Received 0 Likes on 0 Posts
Default Its the old sh1tty gas

just do a nice freeway road trip. it'll break in the motor AND eat up the old gas
Old 06-23-2004, 07:21 PM
  #3  
AudiWorld Super User
 
escargot's Avatar
 
Join Date: Sep 2001
Posts: 17,620
Likes: 0
Received 0 Likes on 0 Posts
Default Don't boost hard until you get some better gas... try fuel injector cleaner too...

By better gas I mean a FULL tank. Octane booster doesn't do anything. Use two or three gallons of Xylene if you're concerned.

-Mike
Old 06-23-2004, 07:42 PM
  #4  
AudiWorld Super User
 
quattro20v's Avatar
 
Join Date: Feb 2003
Location: Vancouver, BC
Posts: 3,289
Likes: 0
Received 0 Likes on 0 Posts
Default I would add some toluene, not xylene.

<ul><li><a href="http://www.elektro.com/~audi/toluene/">http://www.elektro.com/~audi/toluene/</a</li></ul>
Old 06-23-2004, 09:23 PM
  #5  
AudiWorld Super User
 
YumyJager's Avatar
 
Join Date: Aug 2002
Posts: 14,898
Likes: 0
Received 0 Likes on 0 Posts
Default

I'd suck the old gas out, and replace with new, especially with the new bearings.
Old 06-24-2004, 04:09 AM
  #6  
AudiWorld Super User
 
AntiSocial's Avatar
 
Join Date: Nov 2002
Posts: 8,510
Likes: 0
Received 0 Likes on 0 Posts
Default Um, detonation on that new motor?

Did you have Jonesey cc the combustion chamber to see what the actual compression ratio is?
Old 06-24-2004, 05:16 AM
  #7  
AudiWorld Super User
 
YumyJager's Avatar
 
Join Date: Aug 2002
Posts: 14,898
Likes: 0
Received 0 Likes on 0 Posts
Default I REALLY hope for Cody it is just old gas.

I'm sure it is . . .
Old 06-24-2004, 06:26 AM
  #8  
AudiWorld Super User
Thread Starter
 
cpayne's Avatar
 
Join Date: Sep 2000
Posts: 9,705
Likes: 0
Received 0 Likes on 0 Posts
Default Well stopped by ASW this AM..it wasnt the fuel...

but a slightly loose CPS...took 2 seconds to fix. The car now is "perfect" and did I say "scary" fast ;-)
Old 06-24-2004, 07:19 AM
  #9  
AudiWorld Super User
 
escargot's Avatar
 
Join Date: Sep 2001
Posts: 17,620
Likes: 0
Received 0 Likes on 0 Posts
Default

cps = crank position sensor?
Old 06-24-2004, 07:47 AM
  #10  
AudiWorld Super User
 
padriug's Avatar
 
Join Date: Jan 2002
Posts: 6,836
Likes: 0
Received 0 Likes on 0 Posts
Default

*ding*


Quick Reply: Detonation with OLD Gas?!



All times are GMT -8. The time now is 04:19 PM.