What should I do if fuel is contaminated?

As explained in the previous sections, contamination can have a variety of causes.

Seek out the reason for the contamination! Flush the fuel system through with clean, quality fuel.

Note:
The fuel tank may need to be removed.
 

• Replace fuel filters regularly.
• Only use fuel-resistant materials for components that are exposed to fuel (e.g. rubber seals).
• Use quality materials.
• Adhere to the maintenance intervals specified by the vehicle manufacturer.
• Fill the fuel tank completely if the vehicle is going to be stationary for a longer period.
• Place removed parts in a clean place, and cover.
• Only remove the transport closures of new fuel pumps immediately prior to installation.
• Never clean an open fuel system with compressed air.

If you only treat the symptoms (e.g. replacing a damaged fuel pump), the cause will not be eliminated. The problem will reoccur sooner or later.