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Water running out radiator when running with the cap off on a 3.4 motor

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That's what the overflow tank is for. The fluid will spill out with least resistance. Hence, cap off. Put cap back on and forget about it. The overflow tank will fill and empty when the radiator needs more or less coolant. Just make sure the level on the o/f tank filled to the line marker. It's normal dont worry

Posted on Aug 04, 2013

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SOURCE: water not circulating from one side of motor to other

Your water pump could not be circulating.Click here to see how to replace.

Posted on Nov 28, 2012

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Does anybody have a video link on how to flush the cooling system on a GM 3.1L SFI OHV 6cyl motor? I need a vid for this particular motor cause mine is still overheating & i have looked everywhere.


flushing a cooling system is the same method as any other motor

do it without the thermostat fitted
or water pump opening

sacrifice an old radiator hose to adapt a garden hose fitting
for radiator flush

air in system fix
your thermostat housing has no air bleed valve
no top radiator cap

old school way
heater on full
run motor till thermostats fully open
burp radiator hoses
wait till water is running up into over flow bottle without bubble
replace cap
turn off heater
correct level in over flow bottle

why still over heating
you fitted everything i would have ... yet still overheat
possibles
leaking inlet manifold gaskets
hose clamps loose
cooling fans spinning too slow
thermostatic fan switch faulty
aluminum radiator is a big one
air ..fins bent or some water channels blocked

or possible head gasket leak




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Nov 02, 2016 | Cars & Trucks

1 Answer

02 pt cruiser is overheating how do I find the cause of it


check the following: 1.radiator fan motor and fuse for operation. 2. run cooling system pressure test for head gasket, hoses, water pump leaks. 3. pressure test radiator cap. If all tests pass, flush radiator with coolant flush or citric acid for 33-45 minutes

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1 Answer

Have a Vitara 1992 G16a Motor flushed water from radiator and have added coolant as required temp goes up above 3/4 and when turn the motor off the coolant from radiator rushes back into the overflow and...


it appears that there is an air lock in the cooling system. try loosening of a hose at a highest point and letting air out . refill the radiator and run without the cap to see if the level drops or if you continually get air bubbles

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radiator hose may be closing together after running for a while causing water to overflow to tank and ground

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John sounds like your sensor may be bad. Next it could be your thermostat sticking use a temp gun and measure the temp of your radiator at the cap. Do not remove cap. Just take temp. If it is getting hot it should spit water out. Check to see if the electric fan is coming on the sensor to cut the fan on maybe bad or the fan. Hope this helps.

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Water shoots out of the radiator when car is running. Unable to add water/coolant because of this. What is causing this to happen?


Wiil if water just shot out by just running thenyou have a bad radiator
If the water shot out asyou ran the car some thenyou my have a bad water pump and the timing i think not if it was you motor mynot run right...

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You've already eliminated #3 and #6, so keep checking...

Priority Action Part Type Cause
1 Inspect Radiator Cooling System Clogged.
2 Inspect Radiator Radiator Fins Obstructed.
3 Inspect Radiator Cap Worn or Damaged Radiator Cap.
4 Inspect Radiator Fan Motor Faulty Fan Motor.
5 Inspect Belt Incorrectly Routed, Adjusted (Tensioned), Missing or Worn Drive Belt(s).
6 Inspect Thermostat Faulty Thermostat.
7 Inspect Water Pump Worn, Cracked or Leaking Water Pump.
8 Inspect Radiator Fan Relay Intermittent Failure

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Water pump for an 03 chev. cavalier


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2 Answers

Overheating


1. start the engine and leave the radiator cap open.
2. put a cardboard cover or a rug in the front of you radiator.
3. let it runs 20 minutes or more, see if it is overheated and see the water or coolant in the radiator circulated or not. If not, as soon as you have already changed water pump. thermostate and check the hoses, no leak, I think your radiator was blocked.


Did you put stop leak before?

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