- Remove the air cleaner outlet duct. Refer to
Air Cleaner Outlet Duct Replacement
.
Caution: Turn OFF the ignition before inserting fingers into the throttle bore.
Unexpected movement of the throttle blade could cause personal injury.
Notice: Do not insert any tools into the throttle body bore in order to avoid
damage to the throttle valve plate.
- Inspect the throttle body bore and the throttle plate for deposits. You
will need to open the throttle plate in order to inspect all surfaces.
Notice: Do not use any solvent that contains Methyl Ethyl Ketone
(MEK). This solvent may damage fuel system components.
- Clean the throttle body bore and the throttle plate using a clean shop
towel with GM Top Engine Cleaner, P/N 1052626 or AC-Delco Carburetor Tune-Up
Conditioner, P/N X66-P, or an equivalent product.
- Install the air cleaner outlet duct. Refer to
Air Cleaner Outlet Duct Replacement
.