Ok guys... question of th day, I want to bleed the air out of the cooling system. There is a bleeder screw on top of the engine drivers side front next to the temp sending unit ( I think).
Now the question, what is the procedure, Car running at temp? car not running, car hot, car cold?
Thanks guys, this is definately where the noise is coming from, dont know why an air bubble cauld cause noise but its coming from this aluminum tank. The tank has a hose that is runniing to the overflow tank.
its worth a try
DRAINING COOLING
SYSTEM
WARNING: DO NOT REMOVE ENGINE BLOCK
DRAIN PLUGS, COOLANT PRESSURE BOTTLE
CAP, OR OPEN THE RADIATOR DRAINCOCK,
WHEN THE COOLING SYSTEM IS HOT AND UNDER
PRESSURE BECAUSE SERIOUS BURNS FROM
COOLANT CAN OCCUR.
When servicing the cooling system, it is essential
that coolant does not drip onto the accessory drive
belt and/or pulleys. Shield the belt with shop towels
before working on the cooling system. If coolant contacts
the belt or pulley, flush both with clean water.
(1) Remove coolant bottle pressure cap (Fig. 4).
(2) Raise vehicle on hoist.
NOTE: For access to radiator draincock, it is necessary
to remove the front extension belly pan (Refer
to 23 - BODY/EXTERIOR/BELLY PAN - REMOVAL)
(Fig. 5).
(3) Open radiator draincock located at the lower
left side of radiator (Fig. 23).
(4) Remove the engine block drain plug(s).
STANDARD PROCEDURE - FILLING COOLING
SYSTEM
CAUTION: Do not use well water, or suspect water
supply in cooling system. Use only a 50/50 mixture
of the specified ethylene glycol type antifreeze/coolant
and distilled water. (Refer to LUBRICATION &
MAINTENANCE/FLUID TYPES - DESCRIPTION).
NOTE: Cooling system fill procedure is critical to
overall cooling system performance.
For cooling system capacity, (Refer to LUBRICATION
& MAINTENANCE - SPECIFICATIONS -
FLUID CAPACITIES).
(1) Close radiator draincock.
(2) Install engine block drain plugs.
(3) Attach one end of a 6.35 mm (0.250 in.) ID
clear hose that is approximately 1200 mm (48 in.)
long, to the bleed screw (Fig. 6).
(4) Route hose away from the accessory drive belt,
drive pulleys and cooling fan. Place the other end of
hose into a clean container. The hose will prevent
coolant from contacting the accessory drive belt when
bleeding the system during the refilling operation.
Fig. 5 Front Extension Belly Pan
1 - FRAME ASSEMBLY
2 - FRAME BOLTS (4)
3 - FRONT EXTENSION BELLY PAN
4 - FRONT FASCIA
5 - FASCIA BOLTS (9)
6 - HEADLAMP MOUNT SUPPORT
7 - SPRING NUT
8 - HEADLAMP MOUNT SUPPORT BOLTS (4)
M
AIR BLEED SCREW BE OPENED BEFORE ANY
COOLANT IS ADDED TO THE COOLING SYSTEM.
FAILURE TO OPEN THE BLEED SCREW FIRST
WILL RESULT IN AN INCOMPLETE FILL OF THE
SYSTEM.
(5) Open the cooling system bleed screw (Fig. 6).
(6) Pour a 50/50 mix of Mopart Antifreeze/Coolant,
5 Year/100,000 Mile Formula and distilled water into
the coolant pressure bottle (Fig. 7).
(7) Slowly fill the cooling system until a steady
stream of coolant flows from the hose attached to the
bleed screw (Fig. 6).
(8) Close the bleed screw and continue filling system
to the top of the COLD FILL RANGE (Fig. 8).
(9) Remove hose from bleed screw.
(10) Install cap on coolant pressure bottle.
(11) Start engine and run until it reaches operating
temperature.
(12) If removed, install front belly pan (Refer to 23
- BODY/EXTERIOR/BELLY PAN - INSTALLATION).
NOTE: The engine cooling system will push any
remaining air into the coolant bottle within about an
hour of normal driving. As a result, a drop in coolant
level in the pressure bottle may occur.
CLEANING
Drain, flush, and fill the cooling system at the
mileage or time intervals specified (Refer to LUBRICATION
& MAINTENANCE/MAINTENANCE
SCHEDULES - DESCRIPTION). If the solution is
dirty, rusty or contains a considerable amount of sediment,
clean and flush with clean water. Care should
be taken in disposing of the used engine coolant from
your vehicle. Check governmental regulations for disposal
of used engine coolant.
Fig. 6 Cooling System Bleed Screw
1 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR
2 - COOLING SYSTEM BLEED SCREW
3 - CAMSHAFT POSITION SENSOR
Fig. 7 Coolant Pressure Bottle and Cap
1 - PRESSURE CAP
2 - COOLANT PRESSURE BOTTLE
Fig. 8 Cold Fill Range
ZB ENGINE 7 - 13
ENGINE
