How To Clean Diesel Fuel Lines?

Remove the lift pump. Make a good seal with a rubber tip blow gun and blow shop air through the line. Reduce the pressure, however. I’m guessing 20-30 pounds in brief bursts will do the trick until the lines are blown clean into a towel.

What will dissolve diesel sludge?

Technol 246 from Dieselcraft is a fuel additive that penetrates and dissolves diesel sludge buildups in diesel fuel tanks to eliminate filter blockage issues.

Diesel sludge, also known as tank contamination, is an algae-like substance in which cells attach to one another on the tank surface or at the fuel water interface. When a vehicle is fueled, the sludge settles to the bottom of the tank and can clog filters.

A shell of extracellular polymeric substance surrounds these biological structures, protecting the bacteria from biocides and most other chemicals. Technol 246 disperses the sludge into smaller particles that flow through filters and nozzles without clogging or causing damage.

According to Dieselcraft, the cleaned-up fuel will emit less NOx, carbon monoxide, and particulate matter. Poor combustion produces black smoke, which is removed, preventing further biological growth and increasing fuel economy.

According to Dieselcraft, normal treatment costs are around 2 cents per gallon of fuel.

8 ounce bottles, 1 gallon, 5 gallon, and 55 gallon containers of Technol 246 are available. A self-contained tip and measuring bottle are included in the 1 gallon container. 8 ounces of Technol 246 will treat up to 275 gallons of gasoline, and 1 gallon of additive will treat up to 4,000 gallons of fuel, according to Dieselcraft.

How do I know if my fuel line is clogged?

What Does a Clogged Fuel Filter Look Like?

  • Engine performance is poor. A clogged gasoline filter might cause the engine to sporadically hesitate, surge, or splutter under heavy or high-speed acceleration.

What is a fuel line flush?

Cleans the entire fuel system, including the combustion chamber, intake valves, and injector tips, using this highly concentrated fuel additive. Fuel-System Flush’s high-quality detergents and additives are capable of restoring lost performance and gas mileage.

What color is algae in diesel fuel?

How is it possible for something to grow in diesel fuel? Technically, it doesn’t grow in the fuel; rather, it grows at the water-diesel fuel interface. Water is the only thing it needs to survive. Condensation can cause water to develop in your gasoline tank. It can prematurely clog your filters if it gets bad enough. This problem is particularly common in older diesels that have been idle for long periods of time. Small black specks in your transparent pre-filters will be the first sign. You’ll have to look inside your fuel tank to see how bad it is. The best way to do this is to remove the gasoline sending unit. If your tank is completely black, as shown in this image, you most likely have algae growth.

What causes sludge in diesel fuel tank?

Rust, filth, and the oxidation of hydrocarbons in oil generate tank sludge. When there is water in the fuel, it is more likely to form, and water can encourage germs to thrive, contaminating the fuel. These microorganisms sink to the tank’s bottom, where they combine with dirt or rust to generate sludge.

What are the symptoms of a dirty diesel fuel filter?

Engine repairs can be pricey, and they might keep your car in the shop for a long time. Wouldn’t it be fantastic if you could do something simple and inexpensive to help safeguard your engine and keep it running smoothly? Wait! Yes, there is! Extra care should be used with the fuel filter.


  • You’re having trouble starting your car. If the problem is with the fuel filter, and it is not replaced promptly, your car may not start at all.
  • Misfire or a sluggish idle A clogged fuel filter may hinder the engine from receiving sufficient fuel.
  • The vehicle has stalled. Nobody likes to come to a complete halt in traffic! However, if you’re driving with a filter that’s beyond its prime, that’s exactly what could happen.
  • A component of the fuel system has failed. When trying to push fuel through a filthy fuel filter, electric fuel pumps can fail prematurely.
  • The gasoline pump is making a lot of noise. Sudden, odd noises may be your vehicle’s method of alerting you to a problem.


The gasoline system is monitored by sensors in many automobiles. When the Malfunction Indicator Lamp (MIL) or Check Engine Light illuminates, it indicates that a problem has been detected by the sensors.

These major issues could be solved with a simple, low-cost solution: changing the filter. Fuel filter maintenance should be done on a regular basis and in a timely manner to ensure consistent drivability. A clean filter lowers pollutants and protects your engine and fuel system from damage.


The filter should be changed every two years or 30,000 miles (whichever comes first), however this is a general recommendation. You may want to change your fuel filter more frequently if you drive a lot on unpaved roads or through highway construction, which can kick up a lot of dust and debris. The suggested interval for your specific vehicle should be found in your vehicle’s owner’s manual.

Don’t skip a planned maintenance check, but if you notice any of the five faulty fuel filter symptoms above, don’t hesitate to have a professional look at your car between appointments. When you visit one of Jiffy Lube’s 2,000 sites across North America, a qualified Jiffy Lube technician will:

  • Inquire about your driving style to see if it has an impact on your vehicle’s fuel system.
  • Replace the old gasoline filter with a new one that complies with or exceeds the manufacturer’s specifications.


The fuel filter isn’t the only one that works hard to keep your vehicle running smoothly. When you come to Jiffy Lube, the technician will visually verify the following items:

  • Air filter for the engine. The engine air filter, like the fuel filter, assists to trap debris in the fuel and protects the engine from airborne toxins.
  • Filter for transmission. The filter in your automatic transmission prevents dirt and debris from entering the hydraulic system.
  • Air filter for the cabin. The cabin air filter helps remove dust, pollen, and mold from the cabin, allowing you and your passengers to breathe easier.

If a replacement of any type is recommended, the Jiffy Lube expert will inform you, but no work will be done without your permission.


Preventive maintenance performed by a professional will help keep your car running as it should. Jiffy Lube specialists have undergone extensive training and only use high-quality materials. This is beneficial to you since it means your car, truck, minivan, or SUV will be ready to go and keep going when you need it most. It’s also excellent for your wallet, because little changes, such as changing your fuel filter, won’t escalate into costly repairs if spotted early.

What causes fuel lines to clog?

Carbon buildup has jammed the fuel injectors. Carbon builds up on the various elements of your combustion chamber when oxygen and gasoline are burned, including the fuel injectors. Carbon is a byproduct of natural combustion engines, thus it can’t be avoided any more than gas sediment. Your engine will struggle for power and splutter if your fuel injectors are clogged. Clean the fuel injectors every 60,000 miles to eliminate the carbon deposits that have built up.

Can a clogged fuel filter cause no start?

Having trouble starting the car Because it depletes the oil supply going to the engine, the most common indicator of a blocked fuel filter is difficulty starting the car. Although a dirty gasoline filter can cause ignition problems, a completely clogged filter would prevent the engine from starting.