Jeep Wrangler Cooling System Pressure Test
 

Tonight I tried to pressure test my 02 Jeep Wrangler's Cooling
System. After putting about two pumps of air in I could hear the air
move somewhere. When I took off the tester a bunch of coolant was
pushed out. The air went somewhere. It seems like the radiator cap
is not the highest place in teh system? Will this air be trapped?
How do I get it out?

Re: Jeep Wrangler Cooling System Pressure Test
 

katiemcnerney wrote:
> Tonight I tried to pressure test my 02 Jeep Wrangler's Cooling
> System. After putting about two pumps of air in I could hear the air
> move somewhere. When I took off the tester a bunch of coolant was
> pushed out. The air went somewhere. It seems like the radiator cap
> is not the highest place in teh system? Will this air be trapped?
> How do I get it out?

Your system is a closed loop, the air will be pushed out into
the overflow bottle as the system warms up. It probably just
went into the top of the radiator. The coolant that got pushed
out was pushed out because the rubber hoses expand and there is
always some air trapped in the system that can be compressed.

--
DougW

Re: Jeep Wrangler Cooling System Pressure Test
 

katiemcnerney wrote:
> Tonight I tried to pressure test my 02 Jeep Wrangler's Cooling
> System. After putting about two pumps of air in I could hear the air
> move somewhere. When I took off the tester a bunch of coolant was
> pushed out. The air went somewhere. It seems like the radiator cap
> is not the highest place in teh system? Will this air be trapped?
> How do I get it out?

Your system is a closed loop, the air will be pushed out into
the overflow bottle as the system warms up. It probably just
went into the top of the radiator. The coolant that got pushed
out was pushed out because the rubber hoses expand and there is
always some air trapped in the system that can be compressed.

--
DougW

Re: Jeep Wrangler Cooling System Pressure Test
 

katiemcnerney wrote:
> Tonight I tried to pressure test my 02 Jeep Wrangler's Cooling
> System. After putting about two pumps of air in I could hear the air
> move somewhere. When I took off the tester a bunch of coolant was
> pushed out. The air went somewhere. It seems like the radiator cap
> is not the highest place in teh system? Will this air be trapped?
> How do I get it out?

Your system is a closed loop, the air will be pushed out into
the overflow bottle as the system warms up. It probably just
went into the top of the radiator. The coolant that got pushed
out was pushed out because the rubber hoses expand and there is
always some air trapped in the system that can be compressed.

--
DougW

Re: Jeep Wrangler Cooling System Pressure Test
 

katiemcnerney wrote:
> Tonight I tried to pressure test my 02 Jeep Wrangler's Cooling
> System. After putting about two pumps of air in I could hear the air
> move somewhere. When I took off the tester a bunch of coolant was
> pushed out. The air went somewhere. It seems like the radiator cap
> is not the highest place in teh system? Will this air be trapped?
> How do I get it out?

Your system is a closed loop, the air will be pushed out into
the overflow bottle as the system warms up. It probably just
went into the top of the radiator. The coolant that got pushed
out was pushed out because the rubber hoses expand and there is
always some air trapped in the system that can be compressed.

--
DougW