Diesel Fuel Contaminated With Gasoline: Repair Guidelines (13 11 10)

Publication date: 2014-10-01
Reference number: 13 11 10

DIESEL FUEL CONTAMINATED WITH GASOLINE: REPAIR GUIDELINES

TECHNICAL SERVICE BULLETIN

Reference Number(s): SI B13 11 10, Date of Issue: October 2014

BMW:	E90 (3 Series Sedan); E70 (X5); F30 (3 Series Sedan); F31 (3 Series Sports Wagon); F25 (X3); F10 (5 Series Sedan); F15 (X5); F02 (7 Series); With the M57Y, N47T and N57T diesel engines
GROUP:	Fuel Systems

Superceded Bulletin(s): SI B13 11 10, Date of Issue: August 2010

NOTE: This Service Information bulletin supersedes SI B13 11 10 dated August 2010.

SUBJECT

Diesel Fuel Contaminated with Gasoline: Repair Guidelines

SITUATION

BMW Advanced Diesel vehicles are equipped with a fuel-filler neck that incorporates a misfueling protection system to prevent gasoline from being mistakenly pumped into a diesel engine vehicle's tank.

If a diesel engine vehicle is filled and operated with gasoline, internal engine damage, fuel delivery and emission control system failures will occur.

Only fuel nozzles with the recommended "specified" diameter for diesel engine passenger vehicles can be inserted into the filler neck. Most fuel stations have their diesel fuel pumps fitted with this recommended diameter fuel nozzle.

However, if the vehicle's filler-neck misfueling protection system has been disabled, or the incorrect diameter fuel nozzle has been installed on the diesel fuel pump, the vehicle's diesel fuel system can be contaminated by filling the diesel engine vehicle with gasoline.

If the diesel fuel system has been contaminated with gasoline, follow the repair guidelines below:

PROCEDURE

The vehicle has been misfueled, but the engine has not been started yet:
- Drain the fuel tank completely and flush it with clean diesel fuel. No further repairs are needed.
The vehicle has been driven with gasoline contamination for a short time (less than 5 miles):
- Drain the fuel tank completely and flush it with clean diesel fuel. Drain and clean all fuel lines. Replace the fuel filter and the injection High-pressure Pump.
- If the gasoline volume exceeds 50% of the tank's capacity, replace the Diesel Particulate Filter (DPF) due to possible internal overheating.
The vehicle has been driven with gasoline contamination for more than 5 miles:
- Replace the fuel tank, all fuel lines (low and high-pressure sides), fuel filter, High-pressure Pump, injection rail and all injectors.
- Also replace the Diesel Oxidation Catalyst (DOC) and the Diesel Particulate Filter (DPF) due to internal overheating damage.

WARRANTY INFORMATION

Any repair to the engine, its fuel supply system (including draining, flushing, replacing filters and refilling) or the emission control system that is caused by misfueling and operating a diesel engine vehicle with gasoline, is not covered under the terms of the BMW New Vehicle/SAV Limited Warranty.