Home Products News Contact Us
Home > Supports > Generator Sets > Several Reasons Why The Standby Diesel Generator Set Cannot Be Started

Several Reasons Why The Standby Diesel Generator Set Cannot Be Started

Aug. 21, 2023

When configuring standby diesel generator sets, generator manufacturers generally remind users to conduct self-checks every few weeks to ensure that they are in good working condition and can be put into use quickly in an emergency, but some users will find that sometimes the standby unit cannot be started normally. In response to this problem, in this article, Guangxi Dingbo Power Equipment Manufacturing Co., Ltd. will analyze several reasons why the standby diesel generator unit cannot be started.


Diesel generator does not start automatically.

This is the more common cause of diesel generator sets not starting, check that the switch is not left in the off/reset position and the emergency stop button is not pressed. Always double check this after work or maintenance has been performed on your generator to ensure your generator will continue to start automatically when backup power is required.


Diesel generator set starter battery failure.

Long-neglected batteries that are not kept fully charged, or are discharged and charged too many times, can build up too much lead sulfate on their plates. This could result in the battery not charging or not starting at all. Generally speaking, if your battery has been neglected or has been in use for more than three years, it's time to replace it.


Yuchai power generator set

Liquid leak.

Oil, fuel or coolant leaks may prevent backup generators from starting. Leaks can occur for a variety of reasons, but maintenance, including hose and coolant replacement, can prevent this from happening.


Fuel problem.

Not enough fuel can be one of the reasons why your generator won't start. If your generator has a mechanical fuel level gauge, it may stick and give false fuel level indications. Regularly perform a direct visual inspection of the fuel level in the tank and top it up as needed.


Likewise, too much fuel can be the cause of problems with the generator. If you add too much fuel, the high fuel level alarm will sound. There's nothing wrong with the alternator, this may reset itself when the fuel level drops.


Deteriorated diesel fuel can also cause problems with generators. Diesel can degrade over time, especially when water gets into the tank. This can happen on rainy or wet days or when filling the tank with water through condensation. Water in the fuel tank encourages microbial growth and can clog fuel filters and restrict fuel flow to the engine. Regularly check fuel samples by looking for discoloration or unusual odors.


Coolant problem.

Coolant issues, such as low coolant levels and low coolant temperatures, can prevent your generator from starting. If your coolant level is low, it is most likely due to an external or internal leak. If the coolant is not cooling due to radiator problems, or is not flowing properly, the engine may overheat. Sensors in the generator detect this and shut down the generator. Many generators will issue an alarm or error code when the coolant level or temperature is too low, but it may not be obvious that the alarm is the result of a coolant problem.


The above are the reasons why the diesel generator set cannot be started as introduced by Guangxi Dingbo Power Equipment Manufacturing Co., Ltd. The failure of the diesel generator set to start will greatly affect the normal operation of the enterprise and cause unnecessary economic losses to your enterprise. Therefore, users must remember to regularly check the diesel generator set to find out and prevent all kinds of faults early.


Dingbo Power was founded in 2006 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com, we will pay highly attention on your question.

Contact Us
  • Add.: Room 601, Laboratory Building, No.2 Gaohua Road, Nanning, Guangxi, China.
  • Tel.: +86 771 5805 269
  • Fax: +86 771 5805 259
  • Cellphone: +86 134 8102 4441
                    +86 138 7819 8542
  • E-mail: sales@dieselgeneratortech.com
Follow Us

Copyright © Guangxi Dingbo Power Equipment Manufacturing Co., Ltd. All Rights Reserved | Sitemap

Contact Us