SL L4-1.9L DOHC VIN 7 (1992)
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:
New: .0.89 L (1.68 pts.)
Used: .0.95 L (2.0 pts.)
If the leakage exceeds specifications, replace the thermostat assembly.