Using a Fuel Injector Cleaning Kit. Using a fuel injector cleaning kit, you can also clean the fuel injectors yourself. A fuel injector cleaning kit typically includes a cleaning solution and an adapter that connects to your vehicle's fuel rail test port. To use the kit, you need to follow these steps:
Usually, a "fuel injection cleaning service" includes what you mentioned, a drip system into the booster vacuum hose, in addition to a couple other items. A fuel cleaner poured into the gas tank, and a throttle body cleaning. You can do it yourself for $20 but if they did all 3 then you got a good deal. Most places charge $60-100.
Fuel induction service is often referred to as fuel injector service or fuel cleaning service, but the actual service performed varies from one auto repair shop to another. Fuel cleaner can be added to the fuel tank every 5,000-15,000 miles to help stay ahead of carbon buildup in the fuel system, but it is not a complete solution.
Step 5 - Clean up. After your job is done, cleaning up is really important again to avoid accidents and injury from the fuel on the ground. Use the rags to carefully soak up all the leaked fuel that is on the ground. To know how to bleed a diesel fuel injector, it is first important to know why the injector needs to be bled of air.
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