Low Cranking Speed
To determine if low cranking speed is causing starting difficulty, install a tachometer to the engine and record engine revolution while cranking the engine. Refer to OEM guidelines.
- If the cranking speed is greater than 100 rpm, check the OEM fuel supply valve; refer to "5.8 Fuel Supply Valve" .
- If the cranking speed is less than 100 rpm; refer to "5.7.1 Low Cranking Speed Repair" .
Low Cranking Speed Repair
Perform the following steps for low cranking speed repair:
- Drain the engine oil, refer to MBE 900 Service Manual (6SE9007), preventative maintenance chapter.
- Remove the oil filter and install a new oil filter, refer to MBE 900 Service Manual (6SE9007), preventative maintenance chapter.
- Refill the lubrication system with new oil.
- Verify low cranking speed repair; refer to "220.127.116.11 Test Engine with Replaced Oil" .
Test Engine with Replaced Oil
To determine if the replaced oil resolved starting difficulty, perform the following steps:
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.
- Attempt to start and run the engine, if the engine starts and runs, no further troubleshooting is required. Shut down the engine.
- If the engine fails to start and run, check the fuel supply valve; refer to "5.8 Fuel Supply Valve" .
|EPA07 MBE 900 DDEC VI Troubleshooting Guide - 6SE580|
|Generated on 10-13-2008|