Weird water leak

[Bradjon]

Went out to start the car and found fluid on the ground so I backed her out topped her off took about 6 oz started her and no leak got her all the way up to temp and no leak . Put her back into the garage and ant out this morning and fluid on the ground looks like it’s coming from the center of the car . Oh felt the hoses and then popped the radiator cap and it seemed like it had pressure . Any ideas where to look ?

[Subfixer]

Probably just condensation from the Air Conditioner evaporator. It drains around the location of the passenger door, about a foot in from the side of the car.

[We Gone]

Water or coolant?

[Bradjon]

It’s defiantly.coolant nice and green

[Ccmano]

If you have one, hook up a cooling system pressure tester to the system and start tracing the leak. If you don’t have one normally I’d say go to AutoZone and rent one, but I’m not sure they’re open. They’re cheap at Harbor Freight too.

Is the leak center front of engine or center back?
H
:cheers:

[DRM500RUBYZR-1]

look at lower radiator hose carefully.
Marty

[Bradjon]

Hans it at the center front of the motor

[Ccmano]

Hans it at the center front of the motor

Do a pressure test as I described if you have the tool. Sounds like either a hose or the water pump. The pressure test will show it leaking.
H
:cheers:

[Bradjon]

Could the water pump cause what’s going on

[Ccmano]

Yes, there’s a seal at the front of the pump. You’ll see it leaking out from under pulley. With the pulley off you’ll see a weep hole on the bottom of the pump nose. That’s where it will come out if it’s the pump. If thats the case, I would send the pump to Haibeck and have it resealed and the bearings checked, unless you find a new/old stock AC/Delco pump. The Chinese replacement pumps that are currently sold are sketchy at best.
H
:cheers:

[32valvZ]

Sounds like a cold temperature leak to me.... often associated with a loose clamp. I had pretty much the same situation... took a bit to nail down, but I found a loose clamp, gave it a twist and its been fixed for months. Coolant can travel down hoses and parts of the engine and under carriage which will lead you to believe the source is in one place, but actually it will be in a totally different spot.

[We Gone]

As stated check the water pump weep hole.

[Bradjon]

Thanks a bunch guys will ck tomorrow when it’s warmer raining cats and dogs right now

[secondchance]

One word of caution. If you use pressure test tool, do not over-pressurize the system. I would stay below 15 psi.
Over-pressurization could lead to heater core failure and a few of us believe the heater core is GM part number 000001 - very first to be bolted onto the chassis. Heater core replacement is not a fun work.:cheers:

[dredgeguy]

One word of caution. If you use pressure test tool, do not over-pressurize the system. I would stay below 15 psi.
Over-pressurization could lead to heater core failure and a few of us believe the heater core is GM part number 000001 - very first to be bolted onto the chassis. Heater core replacement is not a fun work.:cheers:

Very good advice, ask me how I know..................took a whole Wazoo maintenance day to fix mine. Not a fun project at all.

[Bradjon]

I have done the heater core replacement it’s a ugly job yes I too believe they started with the heater core one the line to build the car first lol

[TX '90 ZR1]

On my '90 I would notice a few drips of coolant from front center after sitting overnight. Seemed like the cooler the weather the larger the leak.
First thought was water pump, but weep hole showed no signs of leakage.
Found several water pump mounting bolts loose. Torqued to speck and no more leakage. Been about a year with all well.
On another note, I had a few small oil leaks. All were corrected by correctly torquing nuts & bolts. You would be surprised how many fasteners are loose after 30 years! :cheers:

[Bradjon]

Ty I will ck the outfit it ever stops raining here lol