Mk3 overheating please help

lawliu89 · 10-25-2010, 04:07 AM

HELP, I have a 87 supra turbo and it overheats really quickly. Im new to the car and i have looked through the forums and figured it probable is a BHG but im still not sure of the problem cause it matches some of the symptoms but i just wanna clarify. I cant get it checked by a mechanic because the car cant even make it out of my neighboorrhood without the temperature guage hitting max loool. When the car starts to overheat, the radiator cap starts fuming water vapor or something? and theres a little bit of coolant residue as well.

BHG symptoms is large amount of white smoke from the exhaust and fumming from where you put the coolant, but theres little white smoke, and its probably cause it was cold (canada lool) and the coolant wasnt boiling from the bottle u put coolant in the car.

The engine oil cap has a little bit of white crust on the lid if that helps and it looks kinda milky? so hopefully the description helps and ill put a picture of the engine and the yellow circles where the smoking from the radiator cap is and i have pictures of the engine oil too.

PLEASE SHARE YOUR SUPRA WISDOM AND KNOWLEDGE WITH ME

btwilson86 · 10-25-2010, 05:49 AM

Based on how that oil looks you probably have a bhg. Drain the oil to confirm, it'll likely look like a chocolate milkshake

MJG · 10-25-2010, 09:04 PM

The pictures confirm water in the oil. The most likely cause is a head gasket failure.
I would strongly discourage runing the engine.
Ethylene glycol is damn hard on bearing surfaces and can cause further damage to your engine. The rapid over heating you describe is bad news for your engine as well.
I fear a complete rebuild is in your future.

10-25-2010, 04:07 AM	#1
lawliu89 Stock Join Date: Oct 2010 Location: richmond hill Posts: 1	Mk3 overheating please help HELP, I have a 87 supra turbo and it overheats really quickly. Im new to the car and i have looked through the forums and figured it probable is a BHG but im still not sure of the problem cause it matches some of the symptoms but i just wanna clarify. I cant get it checked by a mechanic because the car cant even make it out of my neighboorrhood without the temperature guage hitting max loool. When the car starts to overheat, the radiator cap starts fuming water vapor or something? and theres a little bit of coolant residue as well. BHG symptoms is large amount of white smoke from the exhaust and fumming from where you put the coolant, but theres little white smoke, and its probably cause it was cold (canada lool) and the coolant wasnt boiling from the bottle u put coolant in the car. The engine oil cap has a little bit of white crust on the lid if that helps and it looks kinda milky? so hopefully the description helps and ill put a picture of the engine and the yellow circles where the smoking from the radiator cap is and i have pictures of the engine oil too. PLEASE SHARE YOUR SUPRA WISDOM AND KNOWLEDGE WITH ME Attached Thumbnails

10-25-2010, 05:49 AM	#2
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Based on how that oil looks you probably have a bhg. Drain the oil to confirm, it'll likely look like a chocolate milkshake __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

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10-25-2010, 09:04 PM	#3
MJG 3" Exhaust Join Date: Mar 2010 Location: Washington State Posts: 125	The pictures confirm water in the oil. The most likely cause is a head gasket failure. I would strongly discourage runing the engine. Ethylene glycol is damn hard on bearing surfaces and can cause further damage to your engine. The rapid over heating you describe is bad news for your engine as well. I fear a complete rebuild is in your future.