Chrysler RAM CHASSIS CAB 3500 Owner's Manual download pdf (Page 420)

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mixture in excess of 5% can negatively impact the on-

engine fuel filter’s ability to separate water from the fuel,

resulting in high pressure fuel system corrosion or dam-

age.

NOTE: As sufficient testing has not been completed,

ethanol blendsare not recommended or approved for use

with your Cummins Diesel equipped vehicle.

NOTE: In addition, commercially available fuel addi-

tives are not necessary for the proper operation of your

Cummins Diesel equipped vehicle.

Engine Fuel Filter (Gas Engines)

Aplugged fuel filter can cause stalling, limit the speed at

which a vehicle can be driven or cause hard starting.

Should an excessive amount of dirt accumulate in the

fuel tank, frequent filter replacement may be necessary.

Spark Plugs (Gas Engines)

Spark plugs must fire properly to assure engine perfor-

mance and emission control. New plugs should be in-

stalled at the specified mileage. The entire set should be

replaced if there is any malfunction due to a faulty spark

plug, malfunctioning spark plugs can damage the cata-

lytic converter. For proper type of replacement spark

plugs, refer to the Fluids, Lubricants and Genuine Parts

section in this manual.

Catalytic Converter (Gas Engines)

The catalytic converter requires the use of unleaded fuel

only. Leaded gasoline will destroy the effectiveness of the

catalyst as an emission control device.

Under normal operating conditions, the catalytic con-

verter will not require maintenance. However, it is im-

portant to keep the engine properly tuned to assure

proper catalyst operation and prevent possible catalyst

damage.

420 MAINTAINING YOUR VEHICLE

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