How to Bleed
"Brian Burke" firstname.lastname@example.org
TO AVOID OVERHEATING CAUSED BY
COOLING SYSTEM AIRLOCK,
PLEASE EMPLOY THE FOLLOWING PROCEDURE
THE COOLING SYSTEM:
front of car and support safely on jack stands. It must be high enough so
that the radiator filler neck is the highest point in the cooling system.
heater temp lever in the ""heat"" position.
cylinder head tee (see Fig. 1) detach the hose that runs down to the
the same hose at the thermostat, but do not remove. Rotate the hose on the
thermostat 180 degrees, forming a filler spout (see Fig. 2).
coolant into the hose until it begins to run out of the cylinder head tee.
the hose on the tee and tighten the clamps.
slowly filling the cooling system through the radiator until it is full,
periodically squeezing the upper hose to force the air out.
the radiator cap off, start the engine and allow it to run at around 1500
rpm until the lower radiator hose is very warm and the temperature gauge
reads near the center of the scale. This indicates that the thermostat has
may come out at the radiator neck. Add coolant as needed. If the radiator overflows, let it. This is due to trapped air that is expanding. The air will work its way through
the system until it bubbles out the radiator neck.
everything is working right, the upper and lower radiator hoses should get
hot. The radiator fan should
come on a little above 190¡F and shut off a little below 190¡F. Let it cycle on and off a few
- Keep a
close eye on the temperature gauge. If things start getting too hot, shut it down and find and fix the
the engine is running, fill the overflow reservoir with coolant.
everything looks good, then top off the radiator and replace the radiator
cap. Shut off the engine and
lower the car.
Congratulations, you are done!