Improving your diesel vehicle uptime is a direct result of effective fleet maintenance. Look for these warning signs of diesel engine problems that indicate it’s time to bring your vehicle in for repair.
Warning sign: Lack of power and hard starting.
This is likely a sign that not enough fuel is getting through to the engine for combustion and there is a partial blockage of the fuel system. The most common place for blockage is at the main fuel filter. This can be checked by taking a fuel sample before the filter. If the fuel is clear and bright, changing the fuel filter will typically fix the problem. If it is hazy or has particles floating in it, it should be replaced before changing the filter.