Honda 1992 Civic Sedan Owner's Manual page 164

If Your Engine Overheats
4. If the temperature gauge stays at
the red mark, turn off the engine.
5. Wait until you see no more signs
of steam or spray, then open the
hood.
6. Look for any obvious coolant
leaks, such as a split radiator
hose. Everything is still extreme-
ly hot, so use caution. If you find
a leak, it must be repaired before
you continue driving (see
T o w i n g on page 172).
7. If you don't find an obvious leak,
check the coolant level in the
radiator reserve tank (see page
113 ). If the level is below the
M I N mark, add coolant to half-
way between the MIN and MAX
marks.
8. If there was no coolant in the
reserve tank, you may also have
to add coolant to the radiator.
Taking Care of the Unexpected
Let the engine cool down until
the pointer reaches the middle of
the temperature gauge, or lower,
before checking the radiator.
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.
9. Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise, without
pushing down, to the first stop.
This releases any remaining
pressure in the cooling system.
After the pressure releases, push
down on the cap and turn it until
it comes off.
10.Start the engine and set the
heater control lever to maximum.
Add coolant to the radiator up to
the base of the filler neck. If you
do not have the proper coolant
mixture available, you can add
plain water. Remember to have
the cooling system drained and
refilled with the proper mixture
as soon as you can.
11. Put the radiator cap back on
tightly. Run the engine and
watch the temperature gauge. If
it goes back to the red mark, the
engine needs repair. (See
Towing on page 172.)
12.If the temperature stays normal,
check the coolant level in the
radiator reserve tank. If it has
gone down, add coolant to the
MAX mark. Put the cap back on
tightly.