losing coolant :(

keithr0005005 · 01-14-2008, 09:49 PM

alright well im loosing coolant...a lot of it and i cant find where its going haha. i can smell it but i cant find a drop to save my life. i dont think its a bad headgasket because my oil is clean as a whistle. any ideas? Its a 98 with a vortec 350...oh ya and for those that were helping me out this passed week with my other problem it was a defective fuel pump so the truck is running great now! thanks for all your help

ryeja · 01-14-2008, 10:13 PM

How much is alot? Could be intake manifold gasket. Does the exhaust smell sweet and look abnormally white? Could try a pressure test of the cooling system and rad cap as well.

bjf1280 · 01-15-2008, 05:39 AM

It seems like you and I bought the same truck. I'm glad I could help with the fuel pump, it took a while figure it out. My 1998 5.7 is losing anti freeze as well, If you find your leak let me know because I'm ready to torch my truck.

03chevy · 01-15-2008, 06:03 AM

most of your gm truck lose coolant/antifreeze through your intake buy the firewall mainly on the passager side. but you have to replace both. it helps to change the antifreeze to green. flushout the dexcool that is your real problem it eats the gaskets it not made for regular gaskets.

keithr0005005 · 01-15-2008, 05:25 PM

i lose like a half gallon a week! and yes the exhaust is kind of white but i wouldnt quite call it excessive...its kind of hard to tell because it is cold out and generally in the winter you can see your exhaust fumes.

fbhart@wk.net · 01-16-2008, 08:51 AM

my 2000 old style chevy 3/4 ton with 350 was losing coolant, it was the valve cover gaskets. had to be replaced
was told later by a man that worked with gm that the problem started when they changed to the orange coolant.
however gm made a millions changing out the gaskets, mine was a $400 dollar job. He said to drain and flush system and put the old stuff back in and problem would be sloved.

fbhart@wk.net · 01-16-2008, 11:12 AM

sorry about my last reply, not valve cover gasket leaking coolant (dumb) intake manifold gasket leaking coolant.
Sorry about that!!

bjf1280 · 01-16-2008, 10:07 PM

I was just told my problem is the intake manifold gasket as well, is 400 the going price for my 1998 Z71 5.7?

jimbo543 · 01-17-2008, 01:15 AM

check your block heater also, very common to leak

gerryl98 · 01-17-2008, 05:57 AM

Quote:

Originally Posted by jimbo543

check your block heater also, very common to leak

Where is this located?

01-14-2008, 09:49 PM	#1
keithr0005005 Senior Member Join Date: Jan 2008 Posts: 156	losing coolant :( alright well im loosing coolant...a lot of it and i cant find where its going haha. i can smell it but i cant find a drop to save my life. i dont think its a bad headgasket because my oil is clean as a whistle. any ideas? Its a 98 with a vortec 350...oh ya and for those that were helping me out this passed week with my other problem it was a defective fuel pump so the truck is running great now! thanks for all your help

01-15-2008, 05:39 AM	#3
bjf1280 Full Member Join Date: Nov 2007 Posts: 18	same truck same problems It seems like you and I bought the same truck. I'm glad I could help with the fuel pump, it took a while figure it out. My 1998 5.7 is losing anti freeze as well, If you find your leak let me know because I'm ready to torch my truck.

01-15-2008, 06:03 AM	#4
03chevy Senior Member Join Date: Dec 2006 Location: jax,fl Posts: 1,186	most of your gm truck lose coolant/antifreeze through your intake buy the firewall mainly on the passager side. but you have to replace both. it helps to change the antifreeze to green. flushout the dexcool that is your real problem it eats the gaskets it not made for regular gaskets. __________________ A dirty mind is a terrible thing to waste!

01-16-2008, 10:07 PM	#8
bjf1280 Full Member Join Date: Nov 2007 Posts: 18	intake I was just told my problem is the intake manifold gasket as well, is 400 the going price for my 1998 Z71 5.7?

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01-14-2008, 10:13 PM	#2
ryeja Senior Member Join Date: Apr 2007 Posts: 73	How much is alot? Could be intake manifold gasket. Does the exhaust smell sweet and look abnormally white? Could try a pressure test of the cooling system and rad cap as well.

01-15-2008, 05:25 PM	#5
keithr0005005 Senior Member Join Date: Jan 2008 Posts: 156	i lose like a half gallon a week! and yes the exhaust is kind of white but i wouldnt quite call it excessive...its kind of hard to tell because it is cold out and generally in the winter you can see your exhaust fumes.

01-16-2008, 08:51 AM	#6
fbhart@wk.net Senior Member Join Date: Mar 2007 Posts: 115	my 2000 old style chevy 3/4 ton with 350 was losing coolant, it was the valve cover gaskets. had to be replaced was told later by a man that worked with gm that the problem started when they changed to the orange coolant. however gm made a millions changing out the gaskets, mine was a $400 dollar job. He said to drain and flush system and put the old stuff back in and problem would be sloved.

01-16-2008, 11:12 AM	#7
fbhart@wk.net Senior Member Join Date: Mar 2007 Posts: 115	sorry about my last reply, not valve cover gasket leaking coolant (dumb) intake manifold gasket leaking coolant. Sorry about that!!

01-17-2008, 01:15 AM	#9
jimbo543 Senior Member Join Date: Sep 2007 Location: MN Posts: 205	check your block heater also, very common to leak

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