Question about Mazda 323

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1994 mazda capella sedan, have had complete coolant flush and replaced with new coolant, has yesterday, started over heating again and hissing and spitting, lots of smoke from underneth distributer, have done a mechanics course but am not qualified. would like to fix myself if poss. I now have to put water into radiater and overflow tank. what os causing this? Thank you.

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  • kirstyleec
    kirstyleec Nov 10, 2008

    ok another blonde question, eedge,

    My car when brouhgt did not come with any owners manuel so now after looking i cant find where my thermostat and water pump is, if this is a dumb question in sorry, lol i have tried to look, I have no batteries in dig. camera to take a pic, can you help me find my thermostat and water pump?

    I cant remember form when i done my automotive course at polytech lol

  • kirstyleec
    kirstyleec Nov 11, 2008

    ok i think i have found the thermostat and the water pump. with help from neighbour when he was briefly home before. but, I actually think that my fans (i have two) on my ratdiater are not even working and i also noticed that there is water leaking from the top radiater hose onto what looks like a little fuse looking type box which has electrical wires looks like something that may have connection to dizzy? this might have caused hissing sound if water is getting into electrics?

    i cannot touch anything at the moment coz engine is too hot. had to run car on idle to specify point of trouble....think i might be getting closer to what i might need to know,

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Check the thermostat to make sure it is good. They are inexpensive if you just want to put a new one in. If the thermostat is bad, it will not allow the water to properly circulate. If this does not fix the problem, you will have to replace the water pump.

Posted on Nov 10, 2008

  • Jeremy Kenny Nov 10, 2008

    Follow the top radiator hose to the engine. It should go to an alluminum piece. Normally the thermostat is either behind the hose where it connects to the engine, or under the alluminum piece the hose connects to. There is probably 2 bolts that hold that piece to the engine. If you take those 2 bolts off and pull off the part, there should be the thermostat in there. It looks kinda like a top. one of those toys you would spin as a kid. Its smaller around then the top of a soda can. The water pump will be more difficult to explain where it is at. I will try to find it for you, although I am not sure if i will be able to explain to you where it is at. If you have to replace the water pump, that will be a much more technicle job, although it shouldn't be too difficult. If the thermostat does not fix the problem, I would reccomend you get a Haynes manuel from the autoparts store for your car. It will help out a lot.

  • Jeremy Kenny Nov 11, 2008

    Not sure if coolant on the wires would create a hissing noise. It may be comeing from the leak in the hose, which would also cause an over heating problem. Cooling systems are pressurized and if the pressure is either too much or too little, it will cause overheating as too much will create too high of a temperature and too little would not allow the thermostate to open properly to allow the cold coolant into the engine to cool it down. Fix the leak and it may fix the problem.

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