A throttle body injection, or TBI, acts almost like a carburetor, except instead of relying on jets and vacuum to regulate the amount of fuel going into the intake, one fuel injector is used, or sometimes two. , to deliver the correct amount of fuel. to the engine. The Chevy TBI is very common in a variety of engines and various applications. While cleaning the injector itself is often not considered a DIY job, there are still steps the home mechanic can take to clean the injector and throttle body.
Step 1: chevy tbi injector
Change your fuel filter and run a fuel system cleaner through your fuel tank. Use a good industrial grade cleaner such as those available from 3M or Lucas. Follow the directions on the bottle to make sure the cleaner mixes well. In the winter months or during humid weather, wipe with a water stripper as well. Not only does this clean the water from the fuel system, it also prevents water from settling in the Chevy injector and causing rust.
Step 2: how to wash chevy injectors
Remove the air filter to expose the throttle body itself. Disconnect the negative battery terminal. You will be working with a flammable chemical and fuel, and this prevents an accidental electrical spark. Work outdoors in a well-ventilated area
Step 3: how to clean a chevrolet tbi
Open the throttle body valve and spray the entire area thoroughly with throttle body cleaner. This spray cleaner is available at auto parts stores. Do not use carburetor cleaner as this will damage the throttle body. Using a toothbrush or small parts brush, clean varnish and dirt from the side walls of the throttle body.
Step 4: chevrolet s10 tbi system
Spray the injector (s) with throttle body cleaner and gently clean the exterior and injector tip with the brush. Do not insert any metal objects into the injector tip as this will enlarge the nozzle tip and permanently damage the injector. Replace the air filter assembly and start the vehicle. Your Chevy may stumble or hesitate at idle at first, as the injectors discharge the cleaner and debris left on the throttle body. Let your Chevy idle for two to three minutes and then test it out.
Tip, gas pressure chevy tbi
- Commercial injector cleaning is available at local auto repair shops. It involves forcing a liquid cleaner through the injectors at the same pressure as the fuel passes through them. This is the most comprehensive cleaning method, but the cost of the necessary equipment makes it impractical for DIYers. These services are usually available for a nominal fee.
Items you will need
- Fuel system cleaner
- Eye protection
- Basic hand tools
- Throttle Body Cleaner
- Toothbrush or small parts cleaning brush