266 • Section 10 — Chassis Information Cayman 2006
FUEL SYSTEM
Fuel Requirements
Low sulfur #2 diesel fuel or #1 and #2 commercial winter blend diesel fuels are the most common commercially
available and recommended for use. The use of #2 diesel fuel will result in optimum engine performance.
Try to obtain fuel from sources that are serviced often such as large truck service facilities. The fuel supply is
fresh and the possibility of introducing contaminants or water into the fuel system is reduced. It is important to
not empty the engine of fuel. The fuel system on the engine is sensitive to air. If the engine is allowed to run out
of fuel, the fuel system will need to be thoroughly primed before the engine will start. Refer to the Fuel Filters
article for priming instructions.
WARNING:
Do not mix gasohol with diesel fuel. This mixture can cause an explosion.
NOTE:
If the engine has run out of fuel it will need to be primed. Refer to Fuel Filters for
instructions on priming the fuel system.
NOTE:
Due to the precise tolerances of diesel injection systems, it is extremely important that
fuel be kept clean and free of dirt or water. Dirt or water in the system can cause severe
damage to both the fuel pump and the fuel injectors. Fuel additives for lubricity are not
recommended. There are numerous diesel fuel additives to help remove moisture from fuel,
prevent microbe growth and to prevent gelling during cold weather. Before adding any type
of fuel additive or extender, consult the Manufacturer’s Owner’s Manual.
Fuel Tank
The diesel fuel tank is made of steel. Pick-up and return lines are on the roadside. The engine pickup tube is
cut at a 45° angle to allow optimum fl ow to the engine. The generator tube is set to approximately ¼ of a tank.
This will prevent depleting the fuel supply while dry camping.
Internal baffl es slow fuel slosh. A check valve placed at the bottom of the baffl e, at the end of the tank with
the pick-up tube, prevents fuel starvation through long corners when fuel supply is low.
NOTE:
Fill the fuel tank if the motorhome is going to be stored for any length of time to reduce the
amount of potential condensation. After storage, check the vent tube for blockage. It is not
uncommon for insects to plug the vent tube. If pressure or vacuum exists when the fuel cap
is removed, the vent tube may be blocked. The end of the vent tube is located on the curbside
of the fuel tank, near the bottom.
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