Back from the track - - the car is broken.....short version of the story - hope someone can help....

Reply Subscribe

Thread Tools

Search this Thread

08-13-2006, 04:42 PM

#21

Silver Arrow 14

New Member

Join Date: Jan 2003

Posts: 438

Likes: 0

Received 0 Likes on 0 Posts

i get misfires after sitting hot...raising hood helps/eliminates...cause unknown

it's a mystery I haven't been able to trace...

Reply Like

08-13-2006, 04:54 PM

#22

JasonS4+Festicle

AudiWorld Super User

Thread Starter

Join Date: May 2002

Posts: 7,239

Likes: 0

Received 1 Like on 1 Post

in that case, I'd say get new ignition amplifiers and see if it goes away - simple to try to fix.

Reply Like

08-13-2006, 05:10 PM

#23

Ah10@WMS

AudiWorld Super User

Join Date: Aug 2000

Posts: 7,608

Likes: 0

Received 0 Likes on 0 Posts

those are expensive, like $200 a pop, and you need 2 of them! someone might have a spare one laying

around? for testing? before spending 4 bills? just a thought

Reply Like

08-13-2006, 05:26 PM

#24

davenew

AudiWorld Super User

Join Date: Feb 2004

Posts: 7,825

Likes: 0

Received 0 Likes on 0 Posts

do you still have the stock airbox?

I always wondered if the ignition amplifiers get overheated when people remove the stock airbox and just mount them in the engine bay. They have heat sink fins in the stock airbox to cool them.

Reply Like

08-13-2006, 05:46 PM

#25

JBear::FATS

Senior Member

Join Date: Sep 2000

Posts: 4,415

Likes: 0

Received 0 Likes on 0 Posts

If it's that bad, I would probably pressure test and do a complete visual top

and bottom side.

Hopefully you will find something.

Reply Like

08-13-2006, 05:48 PM

#26

Farb

AudiWorld Super User

Join Date: Jul 2005

Posts: 3,311

Likes: 0

Received 0 Likes on 0 Posts

Sent you an email. Didn't want to bother you with another phone call tonight.

Reply Like

08-13-2006, 05:52 PM

#27

Captain Matt, I be

AudiWorld Expert

Join Date: Oct 2001

Posts: 32,063

Likes: 0

Received 2 Likes on 2 Posts

they heat sink to a metal plate on the airbox - might want to try using a better heat sink.

you could probably pick up something decent and cheap at a computer supply place.

Reply Like

08-13-2006, 05:54 PM

#28

JasonS4+Festicle

AudiWorld Super User

Thread Starter

Join Date: May 2002

Posts: 7,239

Likes: 0

Received 1 Like on 1 Post

I'm using a stock airbox top with the ignitions amps still mounted on top!

Reply Like

08-13-2006, 06:21 PM

#29

Ochlockonee

Member

Join Date: Mar 2004

Posts: 2,948

Likes: 0

Received 0 Likes on 0 Posts

If the voltage leaks out between the plug boot and the porcalin insulator, it etches the porcalin.

That etch makes a conduction path. It's typically called carbon tracing and looks like someone took a pencil and drew a line down the side of the plug. In the early stages it isn't visible. That's why I recommended replacing those 2 plugs.