How To Bench Clean Tbi Fuel Injectors
How to Clean a Chevy TBI Fuel Injuctor
by Troy Lambert
fuel empty paradigm by glgec from Fotolia.com
A throttle trunk injection, or TBI, acts almost like a carburetor, except that instead of relying on jets and vacuum to regulate the amount of fuel inbound the intake, a fuel injector, or sometimes two, is used to deliver the correct amount of fuel to the engine. The Chevy TBI is very mutual on a variety of engines and a number of applications. While cleaning the injector itself is ofttimes not considered a exercise-information technology-yourself job, there are still steps the domicile mechanic can follow to clean the injector and the throttle body.
Step 1
Modify your fuel filter, and run a fuel system cleaner through your fuel tank. Utilize a skilful industrial blazon cleaner such equally the ones available from 3M or Lucas. Follow the instructions on the canteen to exist sure that the cleaner mixes well. In the wintertime months or during wet weather, run a water remover through as well. This non only cleans water out of the fuel system, information technology also prevents h2o from settling in the Chevy injector and causing rust.
Step ii
Remove the air cleaner to expose the throttle torso itself. Disconnect the negative battery terminal. You will be working with a flammable chemical and fuel, and this prevents an accidental electrical spark. Work outside in a well ventilated area
Stride three
Open the butterfly of the throttle body, and spray the unabridged area thoroughly with throttle body cleaner. This spray cleaner is available at auto parts stores. Exercise non use carburetor cleaner, as this volition damage the throttle body. Using a toothbrush or small parts brush, clean the varnish and debris from the side walls of the throttle body.
Step iv
Spray the injector or injectors with throttle trunk cleaner, and gently clean the outside and the tip of the injector with the brush. Do non insert any metallic objects into the tip of the injector, equally this volition enlarge the nozzle tip, permanently dissentious the injector.
Replace the air filter assembly, and start the vehicle. Your Chevy may stumble or hesitate at idle at commencement, as the injectors flush our the cleaner and the debris left in the throttle body. Let your Chevy idle for almost two or three minutes, and so take it for a test drive.
References
Tips
- Commercial cleaning of injectors is available at local machine repair shops. It involves forcing a liquid cleaner through the injectors at the same pressure that fuel is pushed through them. This is the most thorough cleaning method, but the expense of the equipment necessary makes it impractical for the practice-it-yourselfer. These services are oftentimes available for a nominal fee.
Things You'll Need
- Fuel system cleaner
- Gloves
- Eye protection
- Basic hand tools
- Throttle body cleaner
- Toothbrush or small parts cleaning brush
Writer Bio
Based in Due north Idaho, Troy Lambert has been writing how-to pieces and historical articles for magazines such as "Woodworking" and "Outdoor Idaho" since 1994. Lambert is also a novelist and has a diverse technical and philosophical education. He holds a technical certification from the Motorcycle Mechanics Institute in Phoenix.
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