Fuel system service
Thread Starter
Pro
Joined: Jan 2013
Posts: 567
Likes: 28
From: Arizona
Fuel system service
2015 A8 wet dump Stingray. 31,000 miles.
The dealer tech recommended 3-part fuel system service at 30,000 miles and noticed carbon deposits on the throttle body blade and housing.
He performed following service:
Injected pressurized solvent through fuel rail & injector nozzles, cleaned all carbon off of throttle plate and housing, and top end engine de-carbon.
The dealer tech recommended 3-part fuel system service at 30,000 miles and noticed carbon deposits on the throttle body blade and housing.
He performed following service:
Injected pressurized solvent through fuel rail & injector nozzles, cleaned all carbon off of throttle plate and housing, and top end engine de-carbon.
Racer
Joined: Aug 2016
Posts: 337
Likes: 48
From: kansas city missouri
for a direct injected engine 30k is about the norm for a fuel cleaning. I work at a hyundai / vw dealer. vw offers an additive to put in the fuel tank that's works pretty well,but you have to use it from day one to be effective. hyundai recommends every 30k and uses the three part cleaning. we charge $149.95.
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Verdad Gallardo
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,000
Likes: 12,392
From: NE South Carolina
To help keep the injectors clean (and to help stop sulfur build-up on the fuel level sensor) I use the GM equivalent of Techron.This is what is said in the 2014 Owner's Manual:
To keep fuel systems clean, TOP TIER Detergent Gasoline is
recommended.
If TOP TIER Detergent Gasoline is not available, one bottle of Fuel
System Treatment PLUS, part number 88861013, added to the fuel
tank at every engine oil change, can help. Fuel System Treatment PLUS
is the only gasoline additive recommended by General Motors.
It is available at your dealer.
Although I use Top Tier over 1/2 the time I still add this cleaner. There have been several posts about folks having to have their gas tanks removed to fix the fuel sender problem, a build up of sulfur. The Techron and GM product say they remove sulfur deposits. I recall one poster who was horrified to find they removed his drive train! Only way to get both tanks down! Another said their dealer fixed the problem with two bottles of the above mentioned GM fuel treatment. They charged $100.
Techron (no doubt IMO that is what the GM bottle contains as it looks the same and the SDS (Safety Data Sheet) says about the same and is $5 at Walmart! Cheap insurance. (Just checked the GM replacement for that part number is $12 at Amazon) Techron is a patented Chevron product and is what is in Top Tier gas.
PS: As noted by jovett below, the GM product is probably Chevron Techron Concentrate Plus, $9 on Amazon
Last edited by JerryU; Feb 16, 2017 at 09:37 PM.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,000
Likes: 12,392
From: NE South Carolina
Burning Brakes
Joined: Aug 2013
Posts: 817
Likes: 34
This is not listed in the manual as a recommended service for 30,000 miles. It will also not address possible coking on the valves. You will also be paying out of pocket for this in all likelihood. This is how dealers make money.
Melting Slicks
Joined: Feb 2006
Posts: 2,172
Likes: 104
From: Des Moines Iowa
4th Gear
Joined: Jun 2017
Posts: 4
Likes: 0
Just got the "Complete Fuel System Service" Needed
Just took my 2014 c7 convertible (25k miles) in for the "leaky hydraulics when operating roof" issue. (Not covered under warranty...arrgh!) The service dude just sent me the automated cellphone message thingie suggesting:
- Perform brake system fluid exchange. ($150)
- Complete fuel system service. ($330)
Last edited by landon3; Jun 14, 2018 at 07:47 PM.
Instructor
Joined: Nov 2005
Posts: 230
Likes: 79
From: Plano TX
My two year old A8 base Stingray coupe uses only Top Tier gas and I put the big bottle of Techron on each fill up but I substitute that with Lucas Upper Cylinder Lub every 3-4 tanks.
We’ll see how that works out. However like most of us we are waiting to see how the intake valves do with carbon build up, or not.
Obviously what I put in the tank won’t help the intake valves so, Stay tuned...
We’ll see how that works out. However like most of us we are waiting to see how the intake valves do with carbon build up, or not.
Obviously what I put in the tank won’t help the intake valves so, Stay tuned...
Race Director
Joined: Mar 2001
Posts: 19,965
Likes: 6,770
From: Bonneville Salt Flats
I ran into the same thing at an unnamed dealer who wanted to do the "cleaning" on what was at the time a non-direct injection engined vehicle touting how well it improved his (the service writer's) vehicle... coincidentally the same model as mine. I listened to the spiel and said, "No thanks."
As someone noted, this is one of many ways that dealers make money no matter what the vehicle or the fueling system.
My vehicle I mentioned? It went twice the mileage and ran fine the entire time. Unfortunately, it was eventually totalled and I'm guessing all the over-priced dealer chemical magic wouldn't have put it back together again!
I'll follow the Manual, thanks.
As someone noted, this is one of many ways that dealers make money no matter what the vehicle or the fueling system.
My vehicle I mentioned? It went twice the mileage and ran fine the entire time. Unfortunately, it was eventually totalled and I'm guessing all the over-priced dealer chemical magic wouldn't have put it back together again!
I'll follow the Manual, thanks.
Last edited by Avanti; Jun 14, 2018 at 09:06 PM.
Instructor
Joined: Nov 2007
Posts: 109
Likes: 38
From: Bellingham Washington
Chevron (my former employer) loves you for using Techron with every tank of gas. Your car engine doesn't care. Unless your car isn't running well, fuel additives are a complete waste of money (It even says so in almost every owners manual)!
I've never used them in 50 years of car ownership, and I've never had a problem in close to one million miles of driving!
Of course the dealer recommends a fuel system treatment every 30,000 miles, it's a huge money maker!
I've never used them in 50 years of car ownership, and I've never had a problem in close to one million miles of driving!
Of course the dealer recommends a fuel system treatment every 30,000 miles, it's a huge money maker!