86.5 7MGE Problems

86.5 7MGE · 10-01-2009, 04:50 AM

And some more...

86.5 7MGE · 10-01-2009, 03:49 PM

OK so this morning I when to check out my radiator again and to my surprise for the first time the radiator sucked up the coolant from the expansion tank it wasn't filled to the brim like it has been all week. So I start looking around and notice a drip coming from a hose above my water pump. Could this be the culpert or is it in combination with a faulty water pump?

btwilson86 · 10-02-2009, 03:13 AM

Any leak in the cooling system will result in it not easily sucking the coolant back from the reservoir. As the coolant cools down, the pressure drops which creates a vacuum in the system. This is what draws the coolant back in. If there is a leak, the cooling system could draw in air (which is easier for it to do) instead of that coolant, leaving it all in the reservoir

86.5 7MGE · 10-02-2009, 03:43 AM

Quote:

Originally Posted by btwilson86

Any leak in the cooling system will result in it not easily sucking the coolant back from the reservoir. As the coolant cools down, the pressure drops which creates a vacuum in the system. This is what draws the coolant back in. If there is a leak, the cooling system could draw in air (which is easier for it to do) instead of that coolant, leaving it all in the reservoir

Ok thanks btwilson86, I did find that there are two hoses that are adjacent to the water pump are swollen. I purchased a brand new water pump today just in case and it was the last one that they had in Denver out of all of their stores; and I'm going to change out the two hoses and see how that works. Would you change out the water pump just to be safe? I don't have any idea of all the parts on the engine; if I had all the money I needed I would replace everything with new parts just to save the headache for at least another 22yrs...lol

btwilson86 · 10-02-2009, 06:02 AM

Well, water pump's are wear items, so IMO it's always good to replace it. I should change mine out, actually...

Swollen hoses also interfere with the cooling system purge, as it expands and contracts with pressure/vacuum.

Let us know what happens with the new parts

10-01-2009, 04:50 AM	#1
86.5 7MGE 3" Exhaust Join Date: May 2009 Location: Denver Posts: 104	And some more... Attached Thumbnails __________________ 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

10-01-2009, 03:49 PM	#2
86.5 7MGE 3" Exhaust Join Date: May 2009 Location: Denver Posts: 104	OK so this morning I when to check out my radiator again and to my surprise for the first time the radiator sucked up the coolant from the expansion tank it wasn't filled to the brim like it has been all week. So I start looking around and notice a drip coming from a hose above my water pump. Could this be the culpert or is it in combination with a faulty water pump? Attached Thumbnails __________________ 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

10-02-2009, 03:13 AM	#3
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Any leak in the cooling system will result in it not easily sucking the coolant back from the reservoir. As the coolant cools down, the pressure drops which creates a vacuum in the system. This is what draws the coolant back in. If there is a leak, the cooling system could draw in air (which is easier for it to do) instead of that coolant, leaving it all in the reservoir __________________ 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

10-02-2009, 06:02 AM	#5
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Well, water pump's are wear items, so IMO it's always good to replace it. I should change mine out, actually... Swollen hoses also interfere with the cooling system purge, as it expands and contracts with pressure/vacuum. Let us know what happens with the new parts __________________ 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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
86.5 7MGE wont start , no spark	Spitfire_Fox	MKIII Supra	6	06-24-2011 03:25 PM
7MGE ECU problems	grabber	MKIII Supra	2	06-10-2009 10:53 PM
86.5 7MGE supra smog test fails	googoogaga	Non-Generation Specific Questions	7	10-18-2006 02:44 AM
fuel problems in 86.5	86.5mkiii	MKIII Supra	3	09-18-2006 10:00 PM
problems, problems, and problems	tone loc	MKIII Supra	6	09-06-2006 04:35 AM