DIY Fuel Injector Cleaning Cleaning Fuel Injectors : Dirty Fuel Injectors : Clogged Fuel Injectors

  • Although not complicated the cleaning of clogged fuel injectors, dirty fuel injectors or fuel injection systems has to be done properly. Understand the possible consequences and know the correct procedures before you pour fuel injector cleaner or engine cleaning additives in your fuel tank. Not knowing what the product can and will do can have disastrous consequences. Theses cleaners can not differentiate between fuel injector, fuel rail, fuel line, fuel filter, fuel pump and fuel tank, and will have a cleaning affect on all the components it touches, thereby sending all the removed debris and contaminates from components other than the fuel injectors directly to the fuel injectors. This can cause the fuel injector filter baskets to become clogged. The minimum you can do before you use any in-tank cleaner on an older vehicle or a vehicle with suspected fuel related problems, is to ensure that you install a new fuel filter before you pour any cleaner in the fuel tank.
  • Take into consideration that some in tank fuel injector cleaners and the overuse of in tank fuel injection cleaning can and eventually will damage expensive catalytic convertors.
  • If the vehicle was not operated for an extended period of time we suggest that all fuel related components be cleaned internally before cleaning addetives are poured into the fuel tank.
  • Never clean your clogged fuel injectors with carburetor cleaner because the carburetor cleaner can and will damage filter baskets and other sensitive parts.
  • Never try and clean your dirty fuel injectors or clogged fuel injectors by blowing high pressure compressed air or cleaners such as brake cleaner etc. directly into the fuel injectors because it will cause damage to the filter baskets and cause debris to get stuck between the pintle valve and housing, causing the pintle valve to become stuck.
  • Always handle your fuel injectors with the utmost care and never drop your fuel injector because it can cause internal damage, damage to the pintel caps  and on some injectors it can even cause the pintle valve tips to get damaged or break off.
  • Never re-install your cleaned fuel injectors with old, hard and cracked o-rings and make sure there is a proper seal between the fuel injector and the fuel rail as well as between the fuel injector and the intake manifold. If you do not have o-ring grease, use clean engine oil or Vaseline on your fuel injector o-rings.
  • Use a vacuum cleaner to remove any dirt from the area where the fuel injectors are installed at the base of the intake manifold or cylinder head.

  • To prevent damage to the engine control module, always use fuel injectors with the same resistance than that specified for the use with your engine’s control module.

  • If you are going to store your fuel injectors for any length of time it is good practice to make sure that your fuel injectors are clean, well lubricated and stored in a sealed plastic bag. Try to remove as much air from the bag as possible
  • 99.9 % of DIY fuel injector cleaning projects does not yield good results because of a lack of the proper equipment. Dirty fuel injectors need to be pulsed at various speeds to properly clean the inside. The ability to back flush the injector is also important because of the dirt removal effect back flushing has. Proper cleaning fluids combined with Ultrasonic pulsation is just about the only way to guarantee clean fuel injector internals.
  • Most of those who attempt to clean their own dirty fuel injectors spend more money and time on the cleaning process than what it would have cost to sent the clogged fuel injectors or dirty fuel injectors off and have it professionally cleaned. In the end that is what most do after they tried to clean there own dirty fuel injectors …. send it off and have them professionally cleaned.
  • Always remember that what you loosen in the tank or in the fuel lines has only one way to go if the fuel filter is not in good shape …… straight into the injectors. Any thing after the fuel filter will automatically be sent to the fuel injectors causing either partially clogged or completely clogged fuel injectors.

Visual Inspection and actual flow testing is the only sure way to confirm that your fuel injectors are truly clean, anything ells is only guess work.

Are you really willing to compromise the reliability of your vehicle on guess work?