David GArcia Posted September 29, 2011 Share Posted September 29, 2011 (edited) I reventrly started up my rb25det 260z and what I have noticed is that I may have the thermostat stuck closed. the reason I think this is because the top radiator hose gets warm after a minute of the car being on but the bottom one doesnt. Also, i stuck my finder inside the coolant and the coolant was not even warm. The reason I think the top hose was warm was only because it was close to the combustion chamber. Also it seems as the oil is taking up all the heat for when I opened the oil cap there were oil fumes after only one minute of idle. I also get a small white vapor coming from the exhaust side manifold. Could this be the cause of overheating and does not need to be cheacked? any ideas? Edited September 29, 2011 by David GArcia Quote Link to comment Share on other sites More sharing options...
Daz Posted September 29, 2011 Share Posted September 29, 2011 How old is the radiator ? It could be gummed up inside preventing flow ! Quote Link to comment Share on other sites More sharing options...
rayaapp2 Posted September 29, 2011 Share Posted September 29, 2011 The gasket is $3 the Thermostat is $11 Go to kragen/autozone and order a thermostat for a a z32 TT in the heat range you need(here on the coast i went with a 170*) The gasket is for a Z31 thermostat. Do a pressure check and insure that you do not have any leaks. Double check your radiator cap to be sure it holds pressure as well. Try and flush the coolant system out. Use what you have to. I like electrisol tablets and run the engine through several heat cycles. drain the coolant. Wash out what you can with a hose or whatever while you drain until you get clear water. Once its drained and clean replace the thermostat. Quote Link to comment Share on other sites More sharing options...
David GArcia Posted September 29, 2011 Author Share Posted September 29, 2011 My radiator is brand new so it must be the thermostat. I will get the thermostart today. As for the radiator cap i took it off my known working sentra se-r spec-v. I'm going to get the tool to pressure test it as well. Any oteher suggestions? Quote Link to comment Share on other sites More sharing options...
David GArcia Posted September 29, 2011 Author Share Posted September 29, 2011 The gasket is $3 the Thermostat is $11 Go to kragen/autozone and order a thermostat for a a z32 TT in the heat range you need(here on the coast i went with a 170*) The gasket is for a Z31 thermostat. Do a pressure check and insure that you do not have any leaks. Double check your radiator cap to be sure it holds pressure as well. Try and flush the coolant system out. Use what you have to. I like electrisol tablets and run the engine through several heat cycles. drain the coolant. Wash out what you can with a hose or whatever while you drain until you get clear water. Once its drained and clean replace the thermostat. What i meant was that it was stuck closed but i edited the post. Quote Link to comment Share on other sites More sharing options...
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