Section 4.6 Low Cranking Speed

Section 4.6
Low Cranking Speed

To determine if low cranking speed is causing starting difficulty, perform the following steps:‪

  1. Install a tachometer to the engine.
  2. Record engine revolution while cranking the engine; refer to OEM for guidelines.
    1. If the cranking speed is greater than 100 rpm, check the fuel supply valve; refer to "4.7 Fuel Supply Valve" .
    2. If the cranking speed is less than 100 rpm; refer to "4.6.1 Low Cranking Speed Repair" .

Section 4.6.1
Low Cranking Speed Repair

Perform the following steps for low cranking speed repair:‪

  1. Drain the engine oil; refer to the appropriate service manual, preventive maintenance engine chapter.
  2. Remove oil filter(s); refer to the appropriate service manual, preventive maintenance chapter.
  3. Install new oil filter(s); refer to the appropriate service manual, preventive maintenance chapter.
  4. Refill the lubrication system with new oil; refer to the appropriate service manual, preventive maintenance chapter.
  5. Verify low cranking speed repair; refer to "4.6.1.1 Test Engine with Replaced Oil" .
Section 4.6.1.1
Test Engine with Replaced Oil

To determine if the replaced oil resolved starting difficulty, attempt to start and run the engine.‪

  1. 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 the fuel supply valve; refer to "4.7 Fuel Supply Valve" .


EPA07 Series 60 DDEC VI Troubleshooting Guide - 6SE567
Generated on 10-13-2008

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