Checks
| Action
|
DEFINITION: The engine delivers less than expected power. There is little or
no increase in speed when partially applying the accelerator pedal.
|
Preliminary Checks
|
| • | Compare the vehicle with a similar unit. Make sure the vehicle has an
actual problem. |
| • | Remove the air filter and check for dirt, or for air ducts being plugged.
Replace as necessary. |
| • | Check for a proper transmission shift pattern and down shift operation. |
| • | Check the engine oil level and quality. |
|
Fuel System Checks
|
| • | Check the fuel supply to the injection pump and the fuel return from the
injection pump. Refer to
Fuel System Diagnosis
. |
| • | Check the fuel pump operation. |
| • | Check for malfunctioning fuel injection nozzles. |
|
Exhaust System Checks
|
| • | Inspect the exhaust system for leaks. |
|
Air Intake System Checks
|
| • | Check for an air leak or restriction in the air inlet ducts or the intake
manifold. |
| • | Check for a worn or damaged turbo charger turbine wheel, shaft or compressor
wheel. |
|
Engine Mechanical Check
| Check the engine for the following conditions:
| • | Improper or worn camshaft |
|
Additional Checks
|
| • | Check the control module grounds for being clean, tight, and in their
proper location. |
| • | Check the generator output voltage. Repair if less than 9 volts or more
than 16 volts. |
|
