Standard Procedure Standard Procedure - Draining Cooling System; Standard Procedure - Filling Cooling System - Chrysler PT Cruiser Service & Repair Manual

PT
ENGINE - 1.6L SOHC (Continued)
If there are no external leaks after the gauge dial
shows a drop in pressure, detach the tester. Start
engine and run the engine to normal operating tem-
perature in order to open the thermostat and allow
the coolant to expand. Reattach the tester. If the nee-
dle on the dial fluctuates, it indicates a combustion
leak and is usually a head gasket leak.
WARNING: WITH TOOL IN PLACE PRESSURE
BUILDS UP FAST. ANY EXCESSIVE AMOUNT OF
PRESSURE BUILT UP BY CONTINUOUS ENGINE
OPERATION MUST BE RELEASED TO A SAFE
PRESSURE POINT. NEVER PERMIT PRESSURE TO
EXCEED 138 kPa (20 psi).
If the needle on the dial does not fluctuate, race
the engine a few times. If an abnormal amount of
coolant or steam is emitted from the tailpipe, it may
indicate a faulty head gasket, cracked engine block or
cylinder head.
There may be internal leaks which can be deter-
mined by removing the oil dipstick. If water globules
appear intermixed with the oil, it will indicate a
internal leak in the engine. If there is an internal
leak, the engine must be disassembled for repair.
STANDARD PROCEDURE
STANDARD PROCEDURE - DRAINING COOLING
SYSTEM
WARNING: DO NOT OPEN THE RADIATOR DRAIN-
COCK WITH THE SYSTEM HOT AND UNDER PRES-
SURE. SERIOUS BURNS FROM COOLANT CAN
OCCUR.
NOTE: Drain, flush, and fill the cooling system at
the mileage or time intervals specified in the MAIN-
TENANCE SCHEDULE (Refer to LUBRICATION &
MAINTENANCE/MAINTENANCE
DESCRIPTION). If the solution is dirty, rusty, or con-
tains a considerable amount of sediment; clean and
flush with a reliable cooling system cleaner. Care
should be taken in disposing of the used engine
coolant from your vehicle. Check governmental reg-
ulations for disposal of used engine coolant.
draincock location.
system not under pressure, turn draincock counter-
clockwise to open (Fig. 3).
then remove the pressure cap.
STANDARD PROCEDURE - FILLING COOLING
SYSTEM
WARNING: MAKE SURE ENGINE COOLING SYSTEM
IS COOL BEFORE REMOVING PRESSURE CAP OR
ANY HOSE. THE COOLING SYSTEM IS PRESSUR-
IZED WHEN HOT. SEVERE PERSONAL INJURY MAY
RESULT FROM ESCAPING HOT COOLANT.
SCHEDULES -
CAUTION: Do not use well water, or suspect water
supply in cooling system. A 50/50 mixture of the
recommended ethylene glycol and distilled water is
recommended. For recommended coolant usage,
(Refer to LUBRICATION & MAINTENANCE/FLUID
TYPES - DESCRIPTION).
NOTE: For cooling system capacity (Refer to
LUBRICATION & MAINTENANCE/SPECIFICATIONS -
FLUID CAPACITIES).
ENGINE - 1.6L SOHC
(1) Position a clean collecting container under
(2) Without removing the pressure cap and with
(3) The coolant reserve bottle should empty first,
(4) If coolant reserve bottle does not empty first:
(a) Check condition of the pressure cap and cap
seals.
(b) Check for kinked/torn overflow hose from
filler neck to reserve bottle.
(5) Allow cooling system to drain completely.
Fig. 3 Cooling System
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