Little Coolant Loss

justin1642 · 07-24-2007, 01:23 PM

ok so i check my coolant every few days and notice that it isn't all the way up anymore. just a little bit is missing like maybe a cup of water needs to be added to fill it completely again. i don't smell antifreeze, no smoking from exhaust, no signs what so ever of a bhg, except for a little coolant loss. so i'm wondering if it is the radiator cap cuz it isn't as snug as it was since i replace the radiator with a koyo one. can anyone help me?

D_Train · 07-24-2007, 01:55 PM

Quote:

Originally Posted by justin1642

ok so i check my coolant every few days and notice that it isn't all the way up anymore. just a little bit is missing like maybe a cup of water needs to be added to fill it completely again. i don't smell antifreeze, no smoking from exhaust, no signs what so ever of a bhg, except for a little coolant loss. so i'm wondering if it is the radiator cap cuz it isn't as snug as it was since i replace the radiator with a koyo one. can anyone help me?

its possible, but when opening your hood you would see coolant. Go buy a block test kit. $50, but the best $50 you'll ever spend. Do the test and post your results.

I had the EXACT same symptoms as you. Trust me, do the block test.

justin1642 · 07-25-2007, 12:54 PM

ok i didn't get the block test yet but after work today i opened the hood and checked and saw that the coolant is going into my overflow tank. there isn't a lot going in just a little bit but it adds up after a few days.

so what is this? is it a bhg just starting?

f00g00 · 07-26-2007, 02:56 AM

You should try a new cap. The way the system works is that when the pressure gets too much it overflows and as the system cools down it creates a vacuum and draws coolant back in from the overflow tank and re-fills the radiator and gets rid of any air left providing there is enough coolant in the overflow.
If its going out and not coming back than I would try the cap first and possibly a new thermostat to go with that.

justin1642 · 07-27-2007, 12:28 PM

is the thermostat housing of an non turbo interchangable with a turbo?

justin1642 · 07-30-2007, 10:59 PM

can anyone tell me if it is for sure...i think it is just want to make sure. thanks

cre · 07-31-2007, 06:42 AM

The turbo's t-stat housing has more sensor ports (one or two more.. I think it's just one more though). It'd be easy to use a turbo t-stat housing on an N/A but not the other way around.

justin1642 · 07-31-2007, 12:19 PM

ok thanks man.

dcrusupra · 07-31-2007, 03:26 PM

Also, dont keep adding just water. If it starts to get too much water into it could start to rust the coolant passages.

abhattan · 08-01-2007, 12:24 AM

I have the same problem, but my cap is good. I did a compression test and got 110psi on #1 cylinder, the rest was at 150psi +/-4psi. What could it be?

07-25-2007, 12:54 PM	#3
justin1642 3" Exhaust Join Date: Mar 2006 Location: Michigan Posts: 213	ok i didn't get the block test yet but after work today i opened the hood and checked and saw that the coolant is going into my overflow tank. there isn't a lot going in just a little bit but it adds up after a few days. so what is this? is it a bhg just starting? __________________

07-27-2007, 12:28 PM	#5
justin1642 3" Exhaust Join Date: Mar 2006 Location: Michigan Posts: 213	is the thermostat housing of an non turbo interchangable with a turbo? __________________

07-30-2007, 10:59 PM	#6
justin1642 3" Exhaust Join Date: Mar 2006 Location: Michigan Posts: 213	can anyone tell me if it is for sure...i think it is just want to make sure. thanks __________________

07-31-2007, 12:19 PM	#8
justin1642 3" Exhaust Join Date: Mar 2006 Location: Michigan Posts: 213	ok thanks man. __________________

07-31-2007, 03:26 PM	#9
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	Also, dont keep adding just water. If it starts to get too much water into it could start to rust the coolant passages. __________________ New Rebuild My CarDomain

07-24-2007, 01:23 PM	#1
justin1642 3" Exhaust Join Date: Mar 2006 Location: Michigan Posts: 213	Little Coolant Loss ok so i check my coolant every few days and notice that it isn't all the way up anymore. just a little bit is missing like maybe a cup of water needs to be added to fill it completely again. i don't smell antifreeze, no smoking from exhaust, no signs what so ever of a bhg, except for a little coolant loss. so i'm wondering if it is the radiator cap cuz it isn't as snug as it was since i replace the radiator with a koyo one. can anyone help me? __________________

07-26-2007, 02:56 AM	#4
f00g00 12psi boost Join Date: Aug 2005 Location: Kuwait Posts: 292	You should try a new cap. The way the system works is that when the pressure gets too much it overflows and as the system cools down it creates a vacuum and draws coolant back in from the overflow tank and re-fills the radiator and gets rid of any air left providing there is enough coolant in the overflow. If its going out and not coming back than I would try the cap first and possibly a new thermostat to go with that.

07-31-2007, 06:42 AM	#7
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The turbo's t-stat housing has more sensor ports (one or two more.. I think it's just one more though). It'd be easy to use a turbo t-stat housing on an N/A but not the other way around.

08-01-2007, 12:24 AM	#10
abhattan 3" Exhaust Join Date: Oct 2006 Location: Brentwood, New York Posts: 162	I have the same problem, but my cap is good. I did a compression test and got 110psi on #1 cylinder, the rest was at 150psi +/-4psi. What could it be? __________________ '91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Heater Union (Coolant Leak)	slader99	MKIII Supra	11	12-28-2009 12:29 AM
Funky engine coolant issue	shirkinator	Non-Generation Specific Questions	1	06-22-2009 08:37 AM
Coolant leak issues	D_Train	MKIII Supra	1	03-15-2007 04:30 AM
coolant loss and alot of it but no puddle?	mizuboi	MKIII Supra	3	09-26-2006 10:31 PM
MKIII coolant leak HELP	sportriderseattle	Non-Generation Specific Questions	2	12-21-2005 06:12 AM