smoking / overheat

JaegerUtah · 12-14-2009, 02:52 AM

i have a 89 n/a supra fix the head on it over a year ago. two days ago was seeing a lot of white smoke out the back, under the hood and under the car. i have found and area on the passenger side next to the down pipe. of where it may be. but the strange thing is tonight i started it not really any smoke until 10 mins of running and a puddle of antifreeze under the car right near the cat. so if anyone can help me with this like asap it would mean alot to me thank u i will be back on Dec 14 2009

cre · 12-14-2009, 07:41 AM

Have you been making sure to keep the coolant system full?

There are only a couple places where it is likely to be coming from if it's pouring down the exhaust and they're all right in front of the fire wall on the passenger side. On the up side, they're not all terrible to get to, on the down side, there is one 90? hose behind the head which is miserable. Hopefully it'll be one of the heater hoses, a crack in the heater control valve or the rubber plug on the metal pipe which peaks out from behind the engine. The Head gasket is a possibility, but I think a hose is more likely.

If you can't spot the source of the leak by hand or feel then go get a pressure tester and have at it.

http://www.cygnusx1.net/Supra/Librar...spx?F=1603&P=1
http://www.cygnusx1.net/Supra/Librar...spx?F=8716&P=1

Cyto · 12-14-2009, 04:40 PM

I agree, the right cap ruptured on mine. It was doing the exact same thing... EXCEPT, I accidentally blew the HG and had to spend over 1 grand fixing it... and it still ruined some stuff that I haven't gotten around to fixing. So check the heater hoses and stuff. It'll save you time and money!!

12-14-2009, 02:52 AM	#1
JaegerUtah Stock Join Date: Dec 2009 Location: syracuse utah Posts: 6	smoking / overheat i have a 89 n/a supra fix the head on it over a year ago. two days ago was seeing a lot of white smoke out the back, under the hood and under the car. i have found and area on the passenger side next to the down pipe. of where it may be. but the strange thing is tonight i started it not really any smoke until 10 mins of running and a puddle of antifreeze under the car right near the cat. so if anyone can help me with this like asap it would mean alot to me thank u i will be back on Dec 14 2009

12-14-2009, 07:41 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Have you been making sure to keep the coolant system full? There are only a couple places where it is likely to be coming from if it's pouring down the exhaust and they're all right in front of the fire wall on the passenger side. On the up side, they're not all terrible to get to, on the down side, there is one 90? hose behind the head which is miserable. Hopefully it'll be one of the heater hoses, a crack in the heater control valve or the rubber plug on the metal pipe which peaks out from behind the engine. The Head gasket is a possibility, but I think a hose is more likely. If you can't spot the source of the leak by hand or feel then go get a pressure tester and have at it. http://www.cygnusx1.net/Supra/Librar...spx?F=1603&P=1 http://www.cygnusx1.net/Supra/Librar...spx?F=8716&P=1 __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

12-14-2009, 04:40 PM	#3
Cyto 3" Exhaust Join Date: Jul 2009 Location: USA Posts: 103	I agree, the right cap ruptured on mine. It was doing the exact same thing... EXCEPT, I accidentally blew the HG and had to spend over 1 grand fixing it... and it still ruined some stuff that I haven't gotten around to fixing. So check the heater hoses and stuff. It'll save you time and money!! __________________ Proud owner of a 1988 Toyota Supra Turbo, 105k Miles, and great condition. I might have to sell it to help pay for school so here's the link. http://www.toyota-supra.info/forums/...html#post72357

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