Detroit Diesel Troubleshooting Diagrams

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Category: DD15

DD15

DD15 Internal Engine Damage Troubleshooting

Posted on October 10, 2023 by sam

To determine if internal engine damage is causing no start condition, perform the following steps: ‪ Install a 3/4 in. breaker bar or ratchet and…

DD15

DD15 Defective Starter

Posted on October 10, 2023 by sam

Check as follows:‪ Verify that the engine will bar over by hand. If not, check for internal engine damage. Refer to “2.4 Internal Engine Damage” . If…

DD15

DD15 Defective Magnetic Switch

Posted on October 10, 2023 by sam

Check as follows:‪ ENGINE EXHAUST ‪ To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.‪ Clamp…

DD15

DD15 Engine Will Only Start Using An External Priming Source

Posted on October 10, 2023 by sam

Hard starting with external priming source indicates a system that cannot generate the required pressure for the high pressure pump.‪ Using DDL7.0 (latest version), check…

DD15

DD15 Defective Starter Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Verify that the engine will bar over by hand. If not, check for internal engine damage. Refer to “2.4 Internal Engine Damage” . If…

DD15

DD15 Empty Fuel Tank Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Check OEM guidelines to determine the amount of fuel in fuel tank. If fuel is at recommended level, check for a weak…

DD15

DD15 Restrictive Air Filter Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Check the restriction gauge. If the gauge show restriction, go to step 3 . If the reading is ok, go to the next step.…

DD15

DD15 Extended Crank Time Troubleshooting

Posted on October 10, 2023 by sam

Complete all other inspections (i.e. battery checks) prior to completing the tasks below.‪ Use DDDL7.0 (latest version) to check for stored or active codes and…

DD15

DD15 External Oil Leaks Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Clean the engine. Start and run the engine to operating temperature 88°C (190°F). Check for leaks at oil lines, connections, mating joints,…

DD15

DD15 General Check for Excessive Oil Consumption Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Check first for external oil leaks. Refer to “4.2 External Oil Leaks” . If no external leaks are found, go to the next step.…

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