Question about 1995 Toyota 4Runner

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I flushed my radiator in my 1995 4runner and ever since I did that, whenever I shut of my truck it starts leaking lots of water above the transmission and flows down both sides of it. I can't see where the leak is coming from. Any ideas?

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Take of the rad cap and let it idel for 20 min's due to it seems to be air locked and the air pressure builds up and forces the water out........Hope this helps.

Posted on Oct 15, 2010

  • 2 more comments 
  • shawnaann6 Oct 15, 2010

    where could it be leaking from though? It runs down both sides of the transmission. Would stop leak help it?

  • keith macisaac
    keith macisaac Oct 15, 2010

    It could but i would check the head gasket as well............Hope this helps.

  • shawnaann6 Oct 15, 2010

    Thank you for your help. Hopefully it's just air and not the head gasket.

  • keith macisaac
    keith macisaac Oct 16, 2010

    I hope so as well and not having to do the job of a head gasket would be a bonus.................Hope all is well and if it was just air-lock......awsome



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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
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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1 Answer

My 99 chevy 1500 is starting to overheat. I'm about to change the oil flush radiator an change thermostat. Been informed I suould check to see if water pump is any good... how would I go about testing the...

If the truck has a lot of miles on it I would replace the water pump . If there are no leaks around the pump and it's not leaking around the shaft bearing and there is no play between the shaft bearing and the pump housing ,the old pump might be all right .make sure you flush the system and could also put a water pump lubricant in the antifreeze .my self I would replace the pump with a new one . If there are no leaks it might be ok . I would also flush out the outside of the radiator while your at it.

Feb 15, 2015 | Cars & Trucks

1 Answer

How do i flush and replace radiator with anti-freeze ?

Drain the old antifreeze. Add straight water and a chemical flushing agent from a parts store, and follow the instructions for using the flush. Then drain again, and replace the radiator and use a 50-50 mix of antifreeze and water (distilled water, preferably-it is cheap) to fill up the cooling system. Leave the radiator cap loose, and start the engine and let it warm up to operating temperature-the upper hose will be hot after the thermostat is opened, and the coolant level will drop some and need topping up.

It's a good idea to also change the thermostat while you are changing the radiator. If you are not replacing the radiator itself, but a lot of brown rust drains out, then take the radiator off and turn it upside down and flush out good with a water hose.

Jun 24, 2014 | 1994 Mitsubishi Pajero

1 Answer

Water reserve bottle is emptying and engine is getting how

flushing a radiator is a waste of time and money as blocked cores do not flush. Have a pressure test done on the coolant system and check for external leaks. have a compression test done to check for head gasket and cracked head. Have a flow test done on the radiator and if shows signs of blockage replace the radiator .. Always fill the radiator at the radiator cap and not the reserve bottle. The reserve bottle water will not go down until the engine coolant starts to cool so if it is going down when the engine is hot then you have a bad leak in the reservoir bottle.

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1 Answer

Car overheating when radiater full water

Have a coolant pressure test done looking for a head gasket problem. as well as the fan

May 18, 2013 | Toyota Cars & Trucks

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1995 mitsubishi Galant 2,4 v6 overheating replaced thermostat and flushed system fine for a while with some rise in temp at times now pressurising water out header tank and temp gauge does not move above...

a few things to check before we condemn it as a leaking head gasket(pressurising water out).
First check the radiator cap seal,no cracks and that it takes some pressure to push the spring loaded part down.
Does both the top and lower radiator hose get hot as temp gets to normal(where thermostat should be open).if not,the thermostat may be a faulty one or has slipped out of seat as the cover was bolted back down onto it.(temperature will differ either side of it).I have had some of these come in with part of the waterpump impellor rotted away.same symptom of one hot and one cold hose,and water doesnt flow inside radiator with cap off(ensure this is not removed if engine is hot)and temp where the thermo should be open.
Possibly the radiator needs sending out for the top or side tank to be removed and each tube cleaned out.this is a lot more effective than trying to reverse flush with water only.
But if temp is normal these areas should be fine.
Do the hoses swell with pressure and become hard to squeeze in a short time?this could reveal a leaking head gasket and should be tested with a teekay type tester for the presence of cylinder gases in cooling system.
Do the fan(s) come on if sitting idling at normal temp for 5-10mins?water can be pushed out if they dont come on or their cut in/out temp is incorrect.hope this helps.
let me know some times re when it pushes water out,do you hear a boiling sound from inside engine or radiator when this happens,any other info that may help diagnose.

Feb 17, 2011 | 1995 Mitsubishi Galant

2 Answers

Is it difficult to change the antifreeze in a 2005 Ford Escape V6? Do you need to change any hoses in the process?

Most places can flush out you system for you. But you can do it your self. and only way you need to change hoses if they are cracked and leaking. you can go to you local auto part store and ask how to do it the safe way cus i may do it the wrong way. also pick up the antifreeze you will need while your i just stick a house in the radiator and take the return house off the radiator and let it flush that way and when i think its all flushed i slow it down and put in the antifreeze and when i start to see green i stop every thing and put the hose back on. but the car needs to be running the whole time to cycle it through the whole motor. but you may need to ask the right way to do not the redneck way i do it.

Apr 18, 2010 | 2005 Ford Escape

3 Answers

My trans fluid is mixing with my radiator fluid, what can i do.

I hate to contradict the prior poster, but I would not see how a blown head gasket could get transmission fluid into the radiator. Motor oil, yes, but transmission fluid, no.

the transmission fluid in your tranny runs out of the transmission and up into the radiator to cool it off.

So if there is transmission fluid in the radiator, I'd look for a leak in the radiator. If it is mixing the two fluids then the leak is probalby internal.

Remember that if the radiator is now 'mixing' water and transmission fluid, there is a possibility that the fluid/water mixture may be going back into the transmission as well

May 16, 2009 | 1994 Buick Park Avenue

1 Answer

Car leaks a lot of antireeze near front of engine

It sounds like a bad water pump. Start by checking hose first. then check thermostat gasket , then check water pump. Replace radiator cap. It is not releasing pressure causing the pressure to find the weakest point somewhere else.

Apr 18, 2009 | 1996 Dodge Stratus

1 Answer

2 questions.

Your first question sounds like a coolant flow problem.
  1. Make sure that the cooling fans are running when the car is hot
  2. Check radiator temps in several places( an infared thermometer can be used for this). Radiator temp should not vary more that about 15 degrees from inlet to outlet side of the radiator. If there is a lot of temperature variance a coolant flush might help, but you probably have partially restricted raditor.
  3. Check for coolant flow. While doing the flush remove the radiator inlet hose and start the car. MAKE SURE THE COOLANT TEMP IS NOT HOT. If there is lots of flow the water pump is pumping.
  4. Check operation of the thermostat. It is a good idea to replace the thermostat whenever doing cooling system repairs.
For your second question you also seem to be going in the right direction. The fuel pump has a check valve in it that can fail and cuase lack of fuel pressure on start up.

If you do have a fuel leak it will cause the same concern. Make sure that there are no fuel leaks.

Another possibility for this concern could be low battery voltage due to a weak battery, or corroded battery terminals or cables.

Sep 02, 2008 | 1995 Buick Skylark

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