How to Clean a 5.7 Liter Chevrolet Throttle Body

by Russell Wood
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The 5.7L V8 was a very popular engine for Chevrolet and has seen many different variations in its design over the years. From 1987 to 1995, a throttle body-injected 5.7L V8 engine was used in everything, from the El Camino to the Silverado, making it widely found in cars and trucks still on the road today. This system uses a throttle body, which will occasionally need to be cleaned to ensure proper lubrication and functionality. In this case, the project vehicle is a 1995 Chevrolet Silverado with a 5.7L TBI engine.

Step 1

Pop the hood and remove the wing nut on the top of the air cleaner. Lift the air cleaner assembly off of the throttle body and set it to the side.

Step 2

Attach the straw included with the throttle body cleaner to the nozzle on the can. Place a shop rag around the throttle body to catch any excess cleaner.

Step 3

Hold open the throttle body using your thumb and spray the inside of the throttle body with the cleaner in short bursts. Spray the throttle linkage on the outside of the throttle body with short bursts as well.

Step 4

Remove the shop rag. Reinstall the air cleaner assembly with the wing nut then close the hood.

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