Diesel Engine Troubleshooting

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Author: Jack

Hello, I'm Jack, a diesel engine fan and a blogger. I write about how to fix and improve diesel engines, from cars to trucks to generators. I also review the newest models and innovations in the diesel market. If you are interested in learning more about diesel engines, check out my blog and leave your feedback.
C15 Troubleshooting

C15 – Excessive Fuel Consumption

Posted on March 11, 2022

Probable Causes The probable root causes are listed in order below: • Vehicle Operation • Vehicle Specifications • Fuel Supply • Air Inlet System or…

C15 Troubleshooting

C15 – Excessive Black Smoke

Posted on March 11, 2022

Probable Causes The probable root causes are listed in order below: • Air inlet system or exhaust system • Valve lash • Electronic unit injector…

C15 Troubleshooting

C15 – Engine Will Not Crank

Posted on March 11, 2022

Probable Causes Note: This is NOT an electronic system problem. Refer to Testing and Adjusting for additional information. The probable root causes are listed in…

C15 Troubleshooting

C15 – Engine Vibration

Posted on March 11, 2022

Probable Causes The probable root causes are listed in order below: • Mounting Brackets • Unbalance of the Clutch Disc • Alignment of the Clutch…

C15 Troubleshooting

C15 – Engine Retarder (Compression Brake) Will Not Turn ON

Posted on March 11, 2022

Probable Causes The probable root causes are listed in order below: • Customer Specified Parameter (Engine Retarder) • Cruise Control On/Off Switch • Engine Retarder…

C15 Troubleshooting

C15 – Engine Misfires, Runs Rough or Is Unstable

Posted on March 11, 2022

Probable Causes The probable root causes are listed in order below: Note: If the problem is intermittent and the problem can not be duplicated, refer…

C15 Troubleshooting

C15 – Engine Cranks but Will Not Start

Posted on March 11, 2022

Probable Causes The probable root causes are listed in order below: • Diagnostic codes • Engine software • Engine speed/timing signal • Key switch •…

C15 Troubleshooting

C15 – Electronic Service Tool Will Not Communicate with ECM

Posted on March 10, 2022

Probable Causes • Configuration for the communications adapter • Electrical connectors • Communication adapter and/or cables • Electrical power supply to the service tool connector…

C15 Troubleshooting

C15 – ECM Will Not Accept Factory Passwords

Posted on March 10, 2022

Probable Causes The probable root causes are listed in order below: • Incorrect password • Incorrect Serial Number • Incorrect reason code • Error on…

C15 Troubleshooting

C15 – Cruise Control, Idle, or PTO Can Not Be Set

Posted on March 10, 2022

Probable Causes The probable root causes are listed below: • Customer Specified Parameters (normal operation) • Cruise Control Pause Switch • On/Off switch for Cruise…

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