MBE 900 DDEC VI Troubleshooting – Section 5.12 Restrictive Air Filter

Section 5.12
Restrictive Air Filter

To determine if a restrictive air filter is causing starting difficulty, perform the following steps:‪

1. Remove the air filter element; refer to OEM guidelines.

   PERSONAL INJURY ‪
   To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.‪

2. Attempt to start and run the engine.
   1. If the engine starts and runs, no further engine troubleshooting is required. Shut down the engine.
   2. If the engine fails to start and run, refer to "5.12.1 Air Filter Replacement" .

Section 5.12.1
Air Filter Replacement

Perform the following steps for air filter replacement:‪

1. Visually inspect the air filter for clogging and replace as necessary; refer to OEM guidelines.
2. Visually inspect gaskets for deterioration and replace as necessary; refer to OEM guidelines.
3. Visually inspect air inlets for restrictions and clean as necessary; refer to OEM guidelines.
4. Verify air filter replacement; refer to "5.12.1.1 Test Engine with Replaced Air Filter" .

Section 5.12.1.1
Test Engine with Replaced Air Filter

To determine if the replaced air filter resolved starting difficult, perform the following steps:‪

PERSONAL INJURY ‪
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.‪

1. Attempt to start the engine, if the engine starts and runs, no further troubleshooting is required. Shut down the engine.
2. If the engine fails to start and run, check compression; refer to "5.13 Low Compression" .