Leaking water pump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dubie · 06-23-2004, 04:33 PM

If a water pump were to start leakin, where excatly does it leak from? The reason I ask is I have been blaming this dripping of antifreeze from the lower rad hose on the hose, but i stuck my hand up farther in behind the pulley and it's wet up there. Does anyone have a pic of where this would leak from??

krue · 06-23-2004, 04:43 PM

If I remember correctly there is a weep hole on the bottom of the waterpump housing, if the seal around the shaft for the pump is leaking, that is where it will come out.

SideStepper · 06-23-2004, 04:56 PM

No picture, but the common spots to check for water pump leaks would be:

1. Gasket at engine block.
(Replace gasket/sealer)

2. Bolt holes into engine block
(Just remove bolt, not pump..... & use sealer on bolt & reinstall)

3. "Weep hole" in pump housing, located bottom side, underneath shaft.
(no fix, replacement water pump required)

Hope this helps, Good luck!

flip66 · 06-23-2004, 06:08 PM

they are right your weep hole is leaking get you a mirror and look at the bottom of the pump and you will see it. It will be a very slow leak and run down the lower hose.

**68 Stepside** · 06-23-2004, 07:29 PM

Tim, here's a few pics, they're kinda hard to see, but you'll get an idea of where the weep hole is.

**smitty62** · 06-23-2004, 07:53 PM

Better get it off.......once they start leaking at the weep hole the bearing goes out in a hurry!

*Gee_Emm* · 06-23-2004, 10:10 PM

Looks like someone is pissed off at their waterpump :p

walker · 06-24-2004, 12:29 AM

Had an s-10, same basic water pump, it started to leak so bad that I started calling the weep hole the pee hole.
If you are into that sort of thing, you can rebuild them with a new bearing and a seal. Rear gasket comes with an engine rebuild set. If you are not then buy a new one, not a rebuilt one.

71-longbed · 06-24-2004, 03:10 AM

my old water pump off my 350 ... looked like the original... it had a very slllllloooooooowwwww leak out of weep hole .. i replaced it even though it still worked .. you could see the yellow crusty trail down the bottom of the pump .... i wonder how much longer it would of lasted ...it had to be leaking for a few years at least

71-longbed · 06-24-2004, 03:12 AM

now you can see the hole :p

06-23-2004, 04:33 PM	#1
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	Leaking water pump If a water pump were to start leakin, where excatly does it leak from? The reason I ask is I have been blaming this dripping of antifreeze from the lower rad hose on the hose, but i stuck my hand up farther in behind the pulley and it's wet up there. Does anyone have a pic of where this would leak from?? __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

06-23-2004, 04:43 PM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	If I remember correctly there is a weep hole on the bottom of the waterpump housing, if the seal around the shaft for the pump is leaking, that is where it will come out. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

06-23-2004, 07:29 PM	#5
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,692	Tim, here's a few pics, they're kinda hard to see, but you'll get an idea of where the weep hole is. Attached Images __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

06-23-2004, 07:53 PM	#6
smitty62 Registered User Join Date: May 2002 Location: North Carolina Posts: 1,234	Better get it off.......once they start leaking at the weep hole the bearing goes out in a hurry! __________________ Stepsides look like real trucks! Smitty

06-24-2004, 12:29 AM	#8
walker Registered User Join Date: Jul 2003 Location: north of Phx AZ about 30 miles Posts: 698	Had an s-10, same basic water pump, it started to leak so bad that I started calling the weep hole the pee hole. If you are into that sort of thing, you can rebuild them with a new bearing and a seal. Rear gasket comes with an engine rebuild set. If you are not then buy a new one, not a rebuilt one. __________________ Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold

06-23-2004, 04:56 PM	#3
SideStepper Registered User Join Date: Jun 2002 Location: Southern California U.S.A. Posts: 278	No picture, but the common spots to check for water pump leaks would be: 1. Gasket at engine block. (Replace gasket/sealer) 2. Bolt holes into engine block (Just remove bolt, not pump..... & use sealer on bolt & reinstall) 3. "Weep hole" in pump housing, located bottom side, underneath shaft. (no fix, replacement water pump required) Hope this helps, Good luck!

06-23-2004, 06:08 PM	#4
flip66 Registered User Join Date: Jan 2004 Location: Garland TX Dallas area Posts: 658	they are right your weep hole is leaking get you a mirror and look at the bottom of the pump and you will see it. It will be a very slow leak and run down the lower hose.

06-23-2004, 10:10 PM	#7
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 4,002	Looks like someone is pissed off at their waterpump :p

06-24-2004, 03:10 AM	#9
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	my old water pump off my 350 ... looked like the original... it had a very slllllloooooooowwwww leak out of weep hole .. i replaced it even though it still worked .. you could see the yellow crusty trail down the bottom of the pump .... i wonder how much longer it would of lasted ...it had to be leaking for a few years at least __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

06-24-2004, 03:12 AM	#10
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	now you can see the hole :p Attached Images __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

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