water pump leak

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

gregor

Junior Member
Joined
Jun 11, 2012
Posts
2
Reaction score
0
Location
Winnipeg, MB
First Name
Gregor
Truck Year
1978
Truck Model
K15
Engine Size
350ci
After parking my truck, I noticed a lot of coolant running out from under my truck. After opening the hood, all the hoses looked good and the coolant was flowing from the water pump area.

Is it safe to assume this was coming from the weep hole on the pump, or maybe a gasket failure? Or am I looking at something more serious? I'll replace the pump tonight, but I always thought it would leak slower and drip out rather than flow out when the water pump seal fails.

If it matters, this is a '78 GMC and the motor is a 290hp GM replacement 350ci.
 

89Suburban

Supporting Member
Supporting Member
Joined
Dec 7, 2010
Posts
24,569
Reaction score
5,930
Location
Southeast PA
First Name
Paw Paw
Truck Year
2007
Truck Model
Chevrolet Tahoe LT
Engine Size
5.3, 4WD
More than likely that is where it is coming from. You should be able to climb under and look up in there and see it. Many times it will run out of that hole and down the lower hose.
 

eastcoastmat

Junior Member
Joined
Jun 22, 2013
Posts
19
Reaction score
0
Location
kansas
First Name
mathew
Truck Year
1976
Truck Model
k10 Scottsdale
Engine Size
350
:hmm:Could be a freeze plug
 

gregor

Junior Member
Joined
Jun 11, 2012
Posts
2
Reaction score
0
Location
Winnipeg, MB
First Name
Gregor
Truck Year
1978
Truck Model
K15
Engine Size
350ci
When I went to unbolt the pump, the bolts we very lose and the gasket material was virtually gone.

New gaskets, a little sealant, and everything is nice and dry!
 

MrMarty51

Full Access Member
Joined
Oct 25, 2012
Posts
7,524
Reaction score
9,381
Location
Eastern Montana
First Name
Martin
Truck Year
1978
Truck Model
K20
Engine Size
400
when i went to unbolt the pump, the bolts we very lose and the gasket material was virtually gone.

New gaskets, a little sealant, and everything is nice and dry!

k00l
 

89Suburban

Supporting Member
Supporting Member
Joined
Dec 7, 2010
Posts
24,569
Reaction score
5,930
Location
Southeast PA
First Name
Paw Paw
Truck Year
2007
Truck Model
Chevrolet Tahoe LT
Engine Size
5.3, 4WD
Good job
 

Forum statistics

Threads
42,329
Posts
913,809
Members
33,828
Latest member
builder100
Top