Coolant Draining into Spark Plug Gulley

86.5 7MGE · 07-29-2009, 04:40 AM

I have a 86.5 7MGE with minimum mods. It just happened recently but I have changed out my hoses about two months ago cause a few were cracked and just today I noticed that I have coolant in the back gathering near my #5 and 6 plug wells. I seen coolant leaking out of the inch size hoses I replaced on top of the valve covers that has an h pipe going to the throttle body and was wanting to know if anyone else has had this problem. This is the first time I have came across any problems with my Supra that I couldn't figure out for myself. Any advice is appreciated thanks

mirage83 · 07-29-2009, 11:41 AM

Not sure on an N/A, but are there small coolant bypass lines going to your TB like there are on a turbo model? And check your heater lines which run from the back of the engine to your firewall.

87mk111 · 07-30-2009, 02:01 PM

I blew that same line on my supra. You'll need to replace it. After u replace it, pull ALL wires of ur spark plug wires. There will probably be coolant in all 6 of the holes, it looked like it was only in the #2 and 3 on mine, but they were all full. Next, take a shop vac and suck the water out. Then put thw wires back in, top off the coolant, and start it up. Make sure to check for leaks after u start the car back up.

86.5 7MGE · 08-05-2009, 11:15 PM

Quote:

Originally Posted by 87mk111

I blew that same line on my supra. You'll need to replace it. After u replace it, pull ALL wires of ur spark plug wires. There will probably be coolant in all 6 of the holes, it looked like it was only in the #2 and 3 on mine, but they were all full. Next, take a shop vac and suck the water out. Then put thw wires back in, top off the coolant, and start it up. Make sure to check for leaks after u start the car back up.

Ok thanks I found a small pin hole spraying out from the hose going over the back side of the engine will be replacing it ASAP.

07-29-2009, 04:40 AM	#1
86.5 7MGE 3" Exhaust Join Date: May 2009 Location: Denver Posts: 104	Coolant Draining into Spark Plug Gulley I have a 86.5 7MGE with minimum mods. It just happened recently but I have changed out my hoses about two months ago cause a few were cracked and just today I noticed that I have coolant in the back gathering near my #5 and 6 plug wells. I seen coolant leaking out of the inch size hoses I replaced on top of the valve covers that has an h pipe going to the throttle body and was wanting to know if anyone else has had this problem. This is the first time I have came across any problems with my Supra that I couldn't figure out for myself. Any advice is appreciated thanks __________________ Cold Air Intake MIZU Aluminum Radiator Ralco RZ Underdrive Pulley NGK Wires and Plugs Hi Flow CAT MR Muffler Super Coil Techna Fit Brake lines Clear Corner Turn Signal Lens Projector Head Lights Evo Fog Lights Evo Body Kit Soon ---> 3'' Exhaust

07-30-2009, 02:01 PM	#3
87mk111 3" Exhaust Join Date: Mar 2009 Location: akron, ohio Posts: 226	I blew that same line on my supra. You'll need to replace it. After u replace it, pull ALL wires of ur spark plug wires. There will probably be coolant in all 6 of the holes, it looked like it was only in the #2 and 3 on mine, but they were all full. Next, take a shop vac and suck the water out. Then put thw wires back in, top off the coolant, and start it up. Make sure to check for leaks after u start the car back up. __________________ 87 N/A 5spd BHG, soon to be gte with r154

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07-29-2009, 11:41 AM	#2
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	Not sure on an N/A, but are there small coolant bypass lines going to your TB like there are on a turbo model? And check your heater lines which run from the back of the engine to your firewall.