The fuel pump is disabled. The cleaner is poured into the container and it is pressured with an air line that is regulated to the same pressure and the fuel pump spec. Then, the engine is started and the engine runs solely on the injection cleaner. 3M and BG products make these systems, among others. It's a bit expensive for the DIY'er. The stock E46 M3 S54 Bosch fuel injector static flow rate is rated at 260 cubic centimeters (cc) per minute at 43 PSI. The purpose of taking out my injectors were to clean it since a buddy of mine had a flow rate of 150 cc on his injectors after 150K+ miles of usage. Little did I know my injectors were going to be worse! Find your fuel port, then follow your cleaning kit’s directions for attaching the hose and port. 6. Remove the fuel tank cap. This will prevent an excessive build up of pressure. 7. Turn on your car engine. Start your car and wait for the cleaning solution to be used up (typically 5-10 minutes). 8. Clearing up the blockages that are present in an EFI system will eliminate engine misfire, stumbling, and hesitation, as a result of a poor air/fuel mixture. These kinds of blockages can also lead to a lack of performance and increased fuel consumption. By following the steps outlined in this video, and ensuring your injector is not receiving The cleaning solution is safe for electrics so the injector can be imursed and cleaned over night. Any remaining crud will be ejected from the injector on startup once re-installed again. And a good injector cleaner will finish the job. This method is by no means as good as having them properly cleaned on a jet bench. STP ® Pro-Series Intake Valve Cleaner is a DIY intake valve cleaning solution designed to remove hardened deposits without a costly engine teardown. Engineered to simplify the intake valve cleaning process with 5 easy steps. One person job from start to finish for professional-grade results. Patent pending design. How it helps: Remove hardened BG Fuel / Air Induction Cleaning Service will remove harmful deposits and will clean the entire fuel induction, air induction and exhaust system. The BG VIA™ A pressurized fuel injection cleaning service involves: Disabling or plugging the fuel pump's pressurized fuel line. Connecting a canister, pressurized with compressed air, of a fuel-injector cleaning mixture to the car's fuel rail. Compressed air at approximately 50 psi will mimic the pressure levels of a typical electronic fuel pump. Start with a near-empty fuel tank, about a quarter tank. If you are having injector issues, we recommend changing the fuel filter before adding fuel injector cleaner for the first time. Start the engine and bring it up to operating temperature. Open the fuel tank and pour in the recommended amount of cleaner. 2.This DIY Injector Cleaner adaptor kit is easily to clean most car motorcycle fuel injectors, such as Bosch, Denso, Delphi, Siemens, Magneti Marell ( except Cylinder Direct-Injection Nozzle ). 3.The package consists of two white tubes and two alligator clip charging cables, which accommodate 2 different sizes of fuel injectors. hX0009.