Where'd it go?

Baystang408 · May 21st, 2008, 08:58 PM

My car (1990 LX 5.0, pretty much stock) has been making this weird knocking sound when I'm driving. The last time it did that it needed coolant. I put coolant in it this time - a full bottle. The radiator was full for a second, but after a couple of minutes, the coolant level was low again. I put a second, full bottle, of coolant in and it did the same thing, and is now overheating when I drive. Where is the coolant going? Does this mean I have a crack in my block somewhere? Busted Thermostat? Any help would be appreciated!!

mr87 · May 21st, 2008, 09:00 PM

run the car and watch for a leak and youll have your problem

91cobra5.0 · May 21st, 2008, 09:16 PM

check your hoses

FoxHoss · May 21st, 2008, 09:51 PM

is your car smoking? white smoke, or smell horrible?

JBIGBOOTSY · May 21st, 2008, 09:59 PM

You may have never fully filled you car up in the first place.

Fill with the car running, top off, wait for the thermostat to open, then top off.

flattusmaximus78 · May 22nd, 2008, 09:29 AM

I couldn't imagine you couldn't see were such a large amount of coolant was going to. My car does drain out that overflow tank pretty dam nfast, and doesn't ever get to normal temps when running. Hell Id lick my intake manifold after racing 6 times.

Arctic Fox · May 22nd, 2008, 09:58 AM

Originally Posted by JBIGBOOTSY

You may have never fully filled you car up in the first place.

Fill with the car running, top off, wait for the thermostat to open, then top off.

+1 There could still be air trapped in your cooling system.

Baystang408 · May 22nd, 2008, 05:27 PM

Originally Posted by FoxHoss

is your car smoking? white smoke, or smell horrible?

It does start smoking after about 20-30 mins of driving, and it has a rust smell to it (if that makes sense). But after letting it cool down and opening the radiator, the coolant level is low again!

Thanks everyone for the feedback!

90mustang · May 22nd, 2008, 08:07 PM

check the oil to see if milky if so you have a head gasket problem or even a head let loose

Hunt_chevs · May 22nd, 2008, 11:39 PM

Originally Posted by JBIGBOOTSY

You may have never fully filled you car up in the first place.

Fill with the car running, top off, wait for the thermostat to open, then top off.

+1

Baystang408 · May 23rd, 2008, 06:38 PM

Thanks Hunt chevs & JBIGBOOTSY....I'll try that and see if that works. If not, I'll be back!

ujslost · May 23rd, 2008, 07:29 PM

Originally Posted by JBIGBOOTSY

You may have never fully filled you car up in the first place.

Fill with the car running, top off, wait for the thermostat to open, then top off.

Yeah thats how your suppose to do it.
Let it warm up at idle with the rad cap off. so air can escape. IF you suspect leaks afterwards. take to a shop and have it pressure tested.

May 21st, 2008, 08:58 PM	#1
Baystang408 Newbie Join Date: Jul 2007 Location: san jose, ca Posts: 3 iTrader: 0 reviews	Where'd it go? My car (1990 LX 5.0, pretty much stock) has been making this weird knocking sound when I'm driving. The last time it did that it needed coolant. I put coolant in it this time - a full bottle. The radiator was full for a second, but after a couple of minutes, the coolant level was low again. I put a second, full bottle, of coolant in and it did the same thing, and is now overheating when I drive. Where is the coolant going? Does this mean I have a crack in my block somewhere? Busted Thermostat? Any help would be appreciated!!

May 21st, 2008, 09:51 PM	#4
FoxHoss Enthusiast 02' GT Join Date: Oct 2007 Location: Brooklyn, CT Posts: 907 iTrader: 0 reviews	is your car smoking? white smoke, or smell horrible? __________________ Nitrous is like a hot girl with an STD... you wanna hit it, but your afraid of the consequences 02' GT ~ Twin Screwed 469hp/493tq

May 22nd, 2008, 09:29 AM	#6
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	I couldn't imagine you couldn't see were such a large amount of coolant was going to. My car does drain out that overflow tank pretty dam nfast, and doesn't ever get to normal temps when running. Hell Id lick my intake manifold after racing 6 times. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

May 21st, 2008, 09:00 PM	#2
mr87 Newbie 1987 mustang gt ? this fall Join Date: May 2008 Location: port jeff ny Posts: 6 iTrader: 0 reviews	run the car and watch for a leak and youll have your problem

May 21st, 2008, 09:16 PM	#3
91cobra5.0 Hardcore Enthusiast 98 Cobra Join Date: Jan 2008 Location: Bay Area, Ca Posts: 2,057 iTrader: 0 reviews	check your hoses

May 21st, 2008, 09:59 PM	#5
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,391 iTrader: 0 reviews	You may have never fully filled you car up in the first place. Fill with the car running, top off, wait for the thermostat to open, then top off.

May 22nd, 2008, 08:07 PM	#9
90mustang Regular 1990 mustang gt Join Date: Apr 2007 Posts: 54 iTrader: 0 reviews	check the oil to see if milky if so you have a head gasket problem or even a head let loose

May 23rd, 2008, 06:38 PM	#11
Baystang408 Newbie Join Date: Jul 2007 Location: san jose, ca Posts: 3 iTrader: 0 reviews	Thanks Hunt chevs & JBIGBOOTSY....I'll try that and see if that works. If not, I'll be back!

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