SW2 L4-1.9L DOHC VIN 7 (1997)
3. Check the valve lift. Minimum valve lift:
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New: 7.5 mm (0.295 inch).
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Used: 6.0 mm (0.236 inch).
NOTE: If the valve full opening temperature or lift are not within specifications, replace the thermostat.
4. Check that the main poppet and bypass valve springs are tight when the thermostat is fully closed. If necessary, replace the thermostat assembly.
5. Check the main poppet rubber seat; If the rubber is deteriorated, replace the thermostat cartridge.
6. Check the thermostat for leakage around the main poppet and check valves. Install the lower radiator hose on the thermostat housing assembly and
fill the hose with clean water. Install a plug with an adapter in the other end of the hose. Place the thermostat in a two quart container and apply
five 35.5 kPa (5 psi) of shop air pressure. Measure the amount of leakage from the assembly for five minutes. Maximum leakage after five
minutes:
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New: 0.89 L (1.68 pts.).
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Used: 0.95 L (2.0 pts.).
NOTE: If the leakage exceeds specifications, replace the thermostat assembly.
