Question about 1992 Honda Prelude

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Water leak. Cant find where its coming from... Ive repaced several hoses, the thermostat, and a radatior cap. Water pump is fine. Any ideas? cap

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  • Honda Master
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Have a pressure test done on the coolant system and look for leaks at the rear of the engine and inside at the heater core. Check the sump oil for grey colour and if there is colour or moisture on the dip stick the leak may be from corrosion holes behind the water in the aluminium timing case housing.

Posted on Feb 15, 2014

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Are you seeing an actual leak on the ground, or are you just having to add coolant ?

Posted on Feb 15, 2014


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SOURCE: water pump is leaking? i think? upper hose is hot

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Posted on May 01, 2010

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reasons it overheats
1. bad waterpump(youve replaced it)
2. car is leaking coolant (youve changed hoses)
3. one or more hoses might collapse at the time of acceleration causing the flow of coolant to get cut off(this actually sounds possible because if you changed the water pump, it should create more suction force than the old one. also what can contribute are bad quality hoses, but usualy only the top radiator hose would be affected. putting those two together and the water pumps suction force collapses the top hose)
4. fans dont turn on(you said they did)
5. thermostat gets stuck(you also said it is a possibility)
6. air in the cooling system(you should bleed the cooling system through the thermostat)
these are the only reasons i can think of that can apply to why your car is over heating. one thing you should try is get the car to normal operating temperature, and once it starts to overheat, observe the fans(hood open of course), if the fans turn off after a couple of seconds even if the dash shows your car is over heating, then it is a good possibility that your tw sensor(sends temperature to dashboar) is bad. also, have someone accelerate the car while in park, and observe the lower hose, if it collapses, then there is your problem, if not then, you might have another problem. if you check these, then your thermostat getting stuck is a good possibility. the easiest way to test it, is simply to remove it and drive without it for a couple of days. since the thermostat housing is attached to the lower radiator house, u will spill some coolant so you should take this chance to bleed the air system. if you need help doing any of this or you have any other questions, just drop a comment and ill be glad to help, hope this helps, goodluck.

Posted on Jun 04, 2011

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Water comes out of the over flow bottle(i checked the cap)

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My 1996 chevy suburban wont start

If you plugged the original leak (which sounds like the head gasket) and then the radiator was leaking, and you are having water coming out of the exhaust, then you need to replace the head gaskets. It sounds like you had a blown head gasket from the start. Here's what to do.

1. Replace the head gaskets (will need intake manifold gasket as it need to come off for this procedure).

2. Replace thermostat, radiator cap (if radiator is still good)

3. Replace water pump; the water pump may have stopped working (mechanical), which in turn caused the pressure to build an blow the head gasket (the cause of the pump would be a bad thermostat. If the truck was overheating, then the thermostat was bad to begin with, then the pump, then the head gasket, so then the only place left for the water to go is out the exhaust.

Here is a list of replacements:

^ water pump
^ thermostat
^ head gaskets
^ valve cover gaskets
^ radiator cap (if radiator is good)
^ radiator : if leak from cap caused any damage to radiator (should still be good)

**Also check the radiator hoses to ensure they do not have any "bubbles". Hot water over time (with anti-freeze) erodes the inside of the hoses, and begins to "dig" holes and grooves in the hose, which evetually cause leaks. Consider replacing these as well for safe measure.

Please, let me know if you need further assistance.


Guru, Premium Expert @

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