3.2L Intake valve deposits
Thread Starter
Audiworld Junior Member
Joined: Dec 2009
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3.2L Intake valve deposits
Greetings all, my wife and I are considering purchasing a 2008 Avant with about 28k miles. We currently have an A4 Avant 2.0T and I've kept an eye on that motor's issues with intake valve deposits. How does the 3.2L seems to be holding up in this regard? Being FSI I'm sure its an issue, but how prevalent and how has Audi been handling it when it does occur?
Thanks for your help.
Thanks for your help.
AudiWorld Member
Joined: Jan 2009
Posts: 417
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From: Sin City
I've never had it happen to mine. But some cars have had the deposits get bad enough to affect drivability in as few as 5k miles. My S.A. basically said to make sure I use a good fuel with detergents in it, like Chevron, or Shell, and to put my foot in it every once in a while. So I guess as long as you don't granny it you should be ok. I have 63K on mine and it's never been an issue.
AudiWorld Member
Joined: Nov 2002
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Hi I have 06 Audi with 40 k on it.
I think i have power decrease and rough idle when its cold. I just took the car for service today. We will see how they will address this issue.
Will let u know in couple days.
I think i have power decrease and rough idle when its cold. I just took the car for service today. We will see how they will address this issue.
Will let u know in couple days.
AudiWorld Super User
Joined: Oct 2008
Posts: 4,219
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From: Boston, MA
Greetings all, my wife and I are considering purchasing a 2008 Avant with about 28k miles. We currently have an A4 Avant 2.0T and I've kept an eye on that motor's issues with intake valve deposits. How does the 3.2L seems to be holding up in this regard? Being FSI I'm sure its an issue, but how prevalent and how has Audi been handling it when it does occur?
Thanks for your help.
Thanks for your help.
Super Moderator
Joined: Sep 2009
Posts: 9,250
Likes: 480
From: Boston MA
+1. That's what we've been told too. Good quality premium unleaded and you need to blow the thing out (Italian tune up) once in a while.
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AudiWorld Member
Joined: Nov 2002
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Came back from the dealer. They said they updated software and put some cleaner in. I have to drive the car for 50 miles and bring it back. They might do valve cleaning for it.
I only use Shell V-Power.
Where can i get VW cleaner?
I only use Shell V-Power.
Where can i get VW cleaner?
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From: Boston MA
The conventional cleaners won't help cleanse the rear of the valves...the cars are direct injection 
To my knowledge, the primary clean-up routines are physical cleaning of that surface or one of these induction-type cleaners that get introduced into the intake. BG makes the system. I suppose something like SeaFoam would be another.
To my knowledge, the primary clean-up routines are physical cleaning of that surface or one of these induction-type cleaners that get introduced into the intake. BG makes the system. I suppose something like SeaFoam would be another.
Thread Starter
Audiworld Junior Member
Joined: Dec 2009
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What I'd really like to know is what makes one engine more susceptible than another to the problem? I mean some owners have a problem at 3k miles, others have no noticeable issue with over 30k miles. Whats causing this huge difference? Driving style? Oil? Fuel? Improperly functioning PCV? Motor built on Friday afternoon, lol?