Fuel System - Driveability Associated With Fuel Quality
00 08 222014753/4
December 18, 2008.
Supersedes Technical Service Bulletin Group 00 number 08-11 dated November 24, 2008 for reasons listed below.
Affected vehicles
01 Gasoline quality
Condition
The use of contaminated gasoline or gasoline with a low content of deposit control additives may result in one or more of the following conditions:
- Excessive accumulation of deposits on intake valves, intake manifold, fuel injectors and combustion chambers.
- Engine runs rough after cold start.
- Excessive engine cranking time.
- Hesitations while driving.
- Rough engine idle.
- Loss of engine performance.
- Poor fuel economy.
Conditions may be severe enough to illuminate the MIL in conjunction with storage in the ECM data memory of DTCs for misfire (example: P0300, P030x) and / or lean fuel system (example: P0171, P0174, P1128, P1130, P1136, P1138).
Technical Background
- Condition may be caused by use of contaminated gasoline.
- Condition may be caused by use of gasoline with a low content of deposit control additives.
Production Solution
Not applicable.
Service
If use of contaminated gasoline is suspected:
Consider advising the customer to change gasoline source (brand/gas station). Contaminated gasoline may exhibit one or more of the following characteristics:
- May have unique color and odor.
- May contain undissolved water.
- May contain sediments and suspended matter.
- May appear cloudy and (after settling) may show signs of separation.
If use of gasoline with a low content of deposit control additives is suspected:
Recommend to the customer the exclusive use of TOP TIER Detergent Gasoline. These products provide improved deposit control performance.
Current TOP TIER Gasoline retailers offering this product in all their octane grades include the following brands:
- Quik Trip
- Chevron
- Conoco
- Phillips 76
- Shell
- Entec Stations
- MFA Oil Company
- Kwik Trip/Kwik Star
- The Somerset Refinery, Inc.
- Chevron-Canada
- Aloha Petroleum
- Tri-Par Oil Company
- Shell-Canada
- Texaco
- Petro-Canada
- Sunoco-Canada
For the fast removal of existing carbon deposits from injectors, combustion chambers and intake valves (for intake valves, applies to MPI engines only) gasoline additive G 001 700 03 can be used. Mix the additive with gasoline directly in the fuel tank following the mix ratio described on the additive container. (Example: 20 ml per 10 liters gasoline, 150 ml per 20 gallons of gasoline.)
Warranty
This TSB is informational only and not applicable to any Audi warranty. The use of gasoline additive G 001 700 03 is not reimbursed under warranty.
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.