In many cases, low fuel pressure is a simple fix once you have identified the cause. Three of the most common causes of heavy equipment low fuel pressure are a faulty regulator, a fuel pump malfunction or problems with the fuel lines.
The regulator is responsible for regulating and adjusting the pressure level of the fuel in your machine's system. When operating correctly, the regulator ensures pressure never gets too high or too low — which is why it's one of the first places you should check if you find a problem with your fuel pressure. A few symptoms of a failed regulator include:
In addition to low fuel pressure, a damaged regulator can also cause excessively high pressure levels inside your machine, which is a hazard. Therefore, it is vital that you repair or replace the regulating element immediately.
The fuel pump moves fuel to your machine's engine. If it isn't operating at full-force, your machine won't receive enough fuel pressure to function correctly because it isn't receiving enough fuel. Some common fuel pump malfunctions include:
The fuel line is a thin hose that carries fuel from your machine's gas tank to the rest of the system. If there is a problem with the fuel line, the motor can overheat, the engine will stall or you might be unable to start your machine at all. A few common problems that can arise with the fuel line are:
Low fuel pressure can manifest itself in many different ways. Common symptoms include:
If you suspect low fuel pressure is to blame for your machine's poor performance, use a fuel pressure tester to analyze the pressure fluctuation in your machine and determine whether the pressure is normal, low or nonexistent.
Once you have identified a decrease in fuel pressure, the next step is to correct the issue and prevent future problems from occuring. Whether you plan to tackle repairs on your own or take your machine to a qualified mechanic, it's a good idea to check each of these critical areas of your machine so you can create an effective action plan:
If you have tried all of these steps to solve your fuel pressure problem, it's time to schedule an appointment with a qualified mechanic or equipment specialist so they can identify any more significant issues that may be at play.
If you have low fuel pressure, it's essential that you correct the problem sooner, rather than later. For you, fixing your machine's fuel pressure problem means:
As you can see, fixing your fuel pressure problem is imperative to the efficiency and cost of operating your machine, as well as its overall value and longevity. However, fixing the problem is not enough — you should also take steps to prevent future pressure issues.
If you've gone through the work of locating, identifying and fixing the problem with your machine, the last thing you want is to run into a similar problem down the road. Here are some tips to reduce heavy equipment fuel pressure problems in the future:
By following these tips, you are doing your part to make sure your equipment and machinery operate efficiently for years to come.
If you are interested in reducing fuel consumption, there are certain steps you can take to make sure your engine is as efficient as possible.
Follow these tips if you are concerned about your construction equipment's fuel efficiency:
If you're trying to cut fuel consumption — whether for the sake of your wallet or the environment — here are some tips to follow:
Low fuel pressure can cause a lot of problems, but by following these tips, you will be able to identify the root of the issue and take the steps necessary to correct it. One of the best things you can do to ensure a fully operational machine is to make sure you purchase it from a reputable dealership.
When you're shopping for used machines, you need to work with a company you can trust. Cat® dealers source most used equipment from rental leases, trade-ins and lease returns and are standing by to help you navigate the process. Your Cat dealer will help you choose the best machine for your job, budget and specific requirements. Find a Cat dealer near you to get started.