Having problems with your 1993 Toyota Corolla ?

I have just replaced the radiator, thermostat, and radiator cap. all hoses top and bottom and electrics are hooked up correctly and tight. i am still loosing coolant / water but the weird thing is it seems to be coming from the back and front of the sump pan(eng) there is no mikly colour in the head and no water / coolant near the water punp on the outside. is there any chance of getting hold of a engine diagram as well as a cooling system diagram. cheers adrian

Posted / edited by AnonymousUser on : 13-08-2018

Answers :

Hi Adrian,\015\012If you are getting water/coolant around the sump pan it sounds like you have a leaky core or welsh plug..\015\012This is a large disk which is used to seal the holes made when the engine and cylinder head was cast.. They do corrode and leak but are very easy to replace. However, getting to them can be an issue sometimes.\015\012My advice is to have the cooling system pressure tested, this will show the leak quite easily..\015\012You can purchase a cooling system pressure tester from your local parts store or you can take the vehicle into your local mechanic who should be able to do this test for you.\015\012If you do this yourself, NEVER exceed the pressure printed on the radiator cap and you may induce leaks due to excessive pressure.\015\012Normally, pressure testing is done at around 13 to 15 PSI..and dont forget to keep the cooling system topped up during testing as the coolant level will drop during the test.
Repair Help & Product Troubleshooting for 1993 Toyota Corolla

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