Ducati Diavel
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Ducati Diavel Owners Manual: Noise and exhaust emission control system information

Ducati Diavel Owners Manual / For united states of america version only / Noise and exhaust emission control system information

Source of emissions

The combustion process produces carbon monoxide and hydrocarbons. Control of hydrocarbons is very important because under certain conditions, they react to form photochemical smog when subjected to sunlight.

Carbon monoxide does not react in the same way, but is toxic. Ducati utilizes lean carburetor settings and other systems to reduce carbon monoxide and hydrocarbons.

Exhaust emission control system

The exhaust emission control system is composed of lean carburetor settings, and no adjustments should be made except idle speed adjustments with the throttle stop screw.

The exhaust emission control system is separate from the crankcase emission control system.

Crankcase emission control system

The engine is equipped with a closed crankcase system to prevent discharging crankcase emissions into the atmosphere. Blow-by gas is returned to the combustion chamber through the air cleaner and the throttle body.

Evaporative emission control system california motorcycles are equipped with an evaporative emission control system which consists of a charcoal canister and associated piping. This system prevents the escape of fuel vapors from the throttle body and fuel tank.

Tampering warning

Tampering with noise control system prohibited. Federal law prohibits the following acts or causing thereof: (1) the removal or rendering inoperative by any person, other than for purposes of maintenance, repair, or replacement, of any device or element of design incorporated into any new vehicle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use; or (2) The use of the vehicle after such device or element of design has been removed or rendered inoperative by any person.

Among those acts presumed to constitute Tampering are the acts listed below:

  1. Removal of, or puncturing the muffler, baffles, header pipes or any other component which conducts exhaust gases.
  2. Removal or puncturing of any part of the intake system.
  3. Lack of proper maintenance.
  4. Replacing any moving part of the vehicle, or parts of the exhaust or intake system, with parts other than those specified by the manufacturer.

This product should be checked for repair or replacement if the motorcycle noise has increased significantly through use.

Otherwise, the owner may become subject to penalties under state and local ordinances.

Problems that may affect motorcycle emissions

If you are aware of any of the following symptoms, have the vehicle inspected and repaired by your local ducati dealer.

Symptoms: hard starting or stalling after starting.

Rough idle.

Misfiring or backfiring during acceleration.

After-burning (backfiring).

Poor performance (driveability) and poor economy.

Reporting of safety defects
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the national highway traffic safety administration (nhtsa) in a ...

Riding safety
The points given below are applicable for every day motorcycle use and shoud be carefully observed for safe and effective vehicle operation. A motorcycle does not provide the impact protection of ...

Other materials:

Cylinder compression test
Note The on-screen icons used during this procedure are explained in a table at the end of this section. Engine performance is directly correlated to the pressure that can be measured in the combustion chambers of the two cylinders. Pressure which is too high/low or an excessive difference be ...

Removal of the fuel tank filler cap
Remove tank covers (sect. 5 - 2, Removal of the fuel tank fairings). Remove hoses (8) and (15) from the filler cap assembly (10). Open the filler cap. Unscrew the outer screws (17) securing the ring nut to the filler cap recess. Remove the filler cap assembly (10). ...

Testing the battery charging system
Note The on-screen icons used during this procedure are explained in a table at the end of this section. You can determine the engine rpm required for generator to produce just enough current to charge battery, feed the injection ignition system and all electric items fitted to motorcycle. Wh ...

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