Rushing water sound on cold started ups

cre · 02-28-2011, 03:03 AM

Any leak in the coolant system can cause this, not just a BHG.

rjSupra · 03-03-2011, 02:18 AM

Hi there.
be real specific about where that coolant leak is. If it's clearly under the water pump and you're sure that's the leak - there you have it, replace the water pump. It's very very easy to do. An afternoon at most, 1 hour if you're fast maybe 2.

However, if it's 'around' that area, it could be several sources, but the one that is suggested a lot on this forum and was my problem I eventually tracked was the 90 degree hose underneath the thermostat which is right in that area - sort of a mysterious almost untrackable 'under' the water pump and 'behind it' just slightly towards the motor side. It's very hard to diagnose without taking out crap around it. That means unbolt the PS reservoir, remove bracket, probably take out the CPS to get more clearance. If you have tiny fingers you might be able to replace that hose without removing anything and it's got screw type hose clamps that are aligned the right way to get out, but I wouldn't bet on that. My personal experience caused me fits, and my car blew coolant all over like a whale spout erupting but only after I reached highway speeds and over 2500 rpms (I guess it had to build up enough pressure to spit it out of the small leak).

Hope that helps somewhat. I do have a link about my repair if you want to read more.

Sonyps307 · 03-03-2011, 02:59 AM

The water pump is new and all the hose r also and yes it's coming from the water pumps gasket. when they rebuild my motor they used RTV and not the gasket I guess he didn't wait a few mins to let the RTV set up.

rjSupra · 03-03-2011, 03:09 AM

Do you mean he didn't use a gasket at all? Or that the RTV wasn't allowed to set right? No gasket is like crazy stupid I think, (although I am no expert). All the repair manuals, TSRM, etc all specifically point out you need a gasket and to put a new one in. If it were my car, and there was no gasket, I would do it myself, removed new pump, put in gasket, and be happy. I am not kidding, the job is very very easy, not like putting a water pump in my Acura Integra which is a little like hell on earth.

I replaced my '88 Supra's, which came with the gasket in the box (from Advanced Auto). I did not have to order one separate. And I did not use RTV sealant, just put it in dry, I didn't have any RTV sealant with me as my car was broken down on the road parked illegally overnight in a sketchy city. I also probably over torqued the bolts and nuts and likely stripped one or two. But it's not been leaking so that's good.

02-28-2011, 03:03 AM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Any leak in the coolant system can cause this, not just a BHG. __________________ 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 --->

03-03-2011, 02:18 AM	#2
rjSupra 3" Exhaust Join Date: Sep 2010 Location: NH Posts: 86	another coolant leak idea for you. Hi there. be real specific about where that coolant leak is. If it's clearly under the water pump and you're sure that's the leak - there you have it, replace the water pump. It's very very easy to do. An afternoon at most, 1 hour if you're fast maybe 2. However, if it's 'around' that area, it could be several sources, but the one that is suggested a lot on this forum and was my problem I eventually tracked was the 90 degree hose underneath the thermostat which is right in that area - sort of a mysterious almost untrackable 'under' the water pump and 'behind it' just slightly towards the motor side. It's very hard to diagnose without taking out crap around it. That means unbolt the PS reservoir, remove bracket, probably take out the CPS to get more clearance. If you have tiny fingers you might be able to replace that hose without removing anything and it's got screw type hose clamps that are aligned the right way to get out, but I wouldn't bet on that. My personal experience caused me fits, and my car blew coolant all over like a whale spout erupting but only after I reached highway speeds and over 2500 rpms (I guess it had to build up enough pressure to spit it out of the small leak). Hope that helps somewhat. I do have a link about my repair if you want to read more. __________________ 88 Supra 7M-GTE Turbo, TEMS, Targa stock

03-03-2011, 03:09 AM	#4
rjSupra 3" Exhaust Join Date: Sep 2010 Location: NH Posts: 86	Do you mean he didn't use a gasket at all? Or that the RTV wasn't allowed to set right? No gasket is like crazy stupid I think, (although I am no expert). All the repair manuals, TSRM, etc all specifically point out you need a gasket and to put a new one in. If it were my car, and there was no gasket, I would do it myself, removed new pump, put in gasket, and be happy. I am not kidding, the job is very very easy, not like putting a water pump in my Acura Integra which is a little like hell on earth. I replaced my '88 Supra's, which came with the gasket in the box (from Advanced Auto). I did not have to order one separate. And I did not use RTV sealant, just put it in dry, I didn't have any RTV sealant with me as my car was broken down on the road parked illegally overnight in a sketchy city. I also probably over torqued the bolts and nuts and likely stripped one or two. But it's not been leaking so that's good. __________________ 88 Supra 7M-GTE Turbo, TEMS, Targa stock

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03-03-2011, 02:59 AM	#3
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	The water pump is new and all the hose r also and yes it's coming from the water pumps gasket. when they rebuild my motor they used RTV and not the gasket I guess he didn't wait a few mins to let the RTV set up.