Century L4-2.2L VIN 4 (1994)
Piston: All Technical Service Bulletins
Engine Coolant Service Fill Procedure (With)
(with Engine Vent Line)
1.
Close the radiator drain valve and remove drain tube.
2.
Install all engine block drain plugs if previously removed. Use pipe sealer when installing drain plugs. When adding engine coolant, it is important
that GM Goodwrench DEX-COOL(R) (orange-colored, silicate-free) coolant meeting GM specification 6277M be used. If silicate-containing
coolant is added to the system, premature engine, heater core, or radiator corrosion may result. In addition, the engine coolant will require change
sooner, at 50,000 km (30,000 miles) or 24 months.
3.
Open the bleeder valve on the heater return pipe.
4.
Fill the cooling system through the surge tank until coolant is expelled out the heater return pipe bleeder valve.
5.
Close bleeder valve.
6.
Top off coolant level in surge tank to a level even with the flat horizontal wall below the vent lines (approximately 1" below fill neck).
Important:
Leave surge tank cap off.
7.
Start and run engine until thermostat opens.
Important:
Thermostat is considered open when upper radiator hose is hot at radiator connection.
Important:
Turn HVAC controls to "heater," full hot and check for warm air during the first five (5) minutes after engine start. If no hot air is present, start
procedure again at Step three (3).
8.
Top off engine coolant, if necessary, to the same level as in Step six (6).
9.
Install surge tank cap.
*The "SNAP-ON TOOLS MODEL BCG 89" can be obtained by contacting a local SNAP-ON TOOLS representative.
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