Eos (1F7) V6-3.2L (BUB) (2008)
Fuel: Technical Service Bulletins
Fuel System - Fuel Related Driveability Issues
01 09 01 Jan. 08, 2009 2014815 Supersedes T. B. Group 01 number 07-55 dated July 17, 2007 due to additional models and model year applicability.
The use of contaminated gasoline, seasonal fuel changes (summer/winter fuel) 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.
Stumbles 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).
1. Condition may be caused by use of contaminated gasoline.
2. Condition may be caused by use of gasoline with a low content of deposit control additives.
No production change required
1. 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
May have unique color and odor.
May contain 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:
MFA Oil Company
Kwik Trip/Kwik Star
The Somerset Refinery, Inc.
Tri-Par Oil Company