Detroit Diesel 50 Series User Manual (English)

Questions and Answers:

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Richard WrightJul 28, 2025
What to do if my Detroit Diesel 50 Series cranks but will not start?
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  Andrew MorrisonJul 28, 2025
  If your Detroit Diesel Engine cranks but doesn't start, several issues could be the cause. First, ensure you have enough fuel by checking and refilling the fuel tank if necessary. Next, check for air in the fuel system and bleed it to remove any air. Inspect all fuel connections and tighten any loose ones, and replace any cracked fuel lines. If these steps don't resolve the issue, the fuel pump may be faulty and require replacement. Also, make sure that there is an adequate supply of fuel. Finally, inspect the DDEC for faults and test and replace any faulty injectors.
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kimberly45Aug 2, 2025
How to fix black or gray smoke from my Detroit Diesel 50 Series?
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  Justin BrownAug 2, 2025
  If your Detroit Diesel Engine is emitting black or gray smoke, several factors could be responsible. Start by checking the air cleaner; if it's damaged or dirty, replace or clean it. Ensure you are using the correct grade of fuel. Also, check for and resolve any exhaust blockages that may be causing excessive exhaust back pressure. Other potential causes include faulty injector timing, which would require adjustment, high ambient temperatures, which means you should ensure the engine operates in suitable temperatures, and thin air due to high altitude, which may require specific adjustments.
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Diane SanchezAug 7, 2025
Why is my Detroit Diesel Engine running rough or frequently stalling?
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  James JohnsonAug 7, 2025
  Rough running or frequent stalling in your Detroit Diesel Engine can stem from a few key issues. A misfiring cylinder could be the culprit, so you'll need to identify and rectify any misfiring conditions. Insufficient fuel supply is another possibility, so ensure that your engine is getting enough fuel. Lastly, a DDEC malfunction could be causing the problem, so inspect the DDEC for any issues.
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Brittany MartinAug 12, 2025
What to do if my Detroit Diesel 50 Series has low cranking speed?
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  ayalaevanAug 12, 2025
  If your Detroit Diesel Engine has a low cranking speed, several factors could be the cause. Begin by checking the battery voltage; if it's low, charge or replace the battery. A faulty cranking motor or cranking motor switch could also be responsible, so replace them if necessary. Finally, verify and add the correct lube oil.
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Michelle FarrellAug 17, 2025
What to do if my Detroit Diesel Engine has low oil pressure?
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  Chad CaseyAug 17, 2025
  If your Detroit Diesel Engine is experiencing low oil pressure, start by checking the oil level and add oil to bring it to the correct level. If the oil level is adequate, the issue might be a faulty oil pressure regulator or relief valve, which would need to be replaced.
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john05Aug 22, 2025
How to troubleshoot a Detroit Diesel 50 Series that will not rotate?
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  Craig ClarkAug 22, 2025
  If your Detroit Diesel Engine will not rotate, there are several potential causes to investigate. Start by checking the battery voltage; if it's low, charge or replace the battery. Ensure that the cranking motor connections are tight. If the connections are secure, the cranking motor or cranking motor switch may be faulty and need replacement. Finally, internal seizure may be the reason, so inspect and repair internal components.