Pressure Valve in Filler Cap, Check
Tools:
9996662 Pressure testing kit
1 Drain some of the coolant and connect
9996662 Pressure testing kit
to a nipple or other
plugged hole in the cooling system.
2 Extend the drain hose from the filler pipe with a
hose that discharges into a water-filled vessel.
3 Increase the pressure and read the pressure
gauge when the valve opens (water bubbles into
the vessel with the drain hose). The valve should
open at 75 kPa (10.9 PSI).
4 Remove the test equipment. Install the plug and
fill the engine with coolant.
26-0 Cooling System, General
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