Thursday, October 6, 2011

IS THIS A BAD WATER PUMP?

I have a 1990 GMC K1500 Sierra and about 1 week ago I went to check the anti-freeze level. I noticed it was a tiny bit down. So I look down at the lower radiator hose and it had a slow drip. So the next day I changed the anti-freeze, New thermostat, and a New lower radiator hose. So I thought it was fine but yesterday I went to go check the anti-freeze and the level was down. I look at the lower radiator hose and it has a slow drip again. The hose I replace was Brand New. Could this be a water pump? I did notice a tiny bit of anti-freeze on the water pump. Or what could this be or do I have to change the hose again?
IS THIS A BAD WATER PUMP?
If the water pump is leaking, there should be a trail of coolant going down the engine. Gotta find where the leak is coming from to determine what to replace. Upper hose, clamps, radiator? Sometimes ya gotta hose off all the antifreeze, let it dry, then look. Good luck.
IS THIS A BAD WATER PUMP?
no
it could be the water pump. if you can wipe off the hose and try to pin point when the leak is coming from....it could be there is a leak higher up perhaps on the radiator, but is settling on the lower hose, making it seem like that is where it is leaking from
could be the seal in the bottom of the water has gone bad. Take it to a garage and have them hook it up and do a pressure test, that should tell you where the leak is.
Take a small mirror if you can and look under the water pump, It has a small %26quot;weep%26quot; hole there, and if the pump seals are going bad, you will see antifreeze dripping from there.
Yes you need a waterpump. There isa weephole on the bottom that will

leak right down yourlower radiator hose.
when changing anti-freeze did u run car for pump to kick on that could be why level is low
look at the bottom of the water pump best done from on the ground. you will see a small hole at the bottom this is called a weep hole. if you see anti-freeze at the weep hole then the water pump seal is bad and the pump needs replaced. a lot of time the weep hole will leak and run down the hose. if the pump is not leaking then tighten the hose clamp.
If its the water pump, you should see the trail of antifreeze coming out of the small hole on the bottom of the pump. When the seal in the pump goes bad, the water leaks past it and out the hole. It lets you know when the seal has gone out
here,s what to do. when it,s dripping look under the car and see if it,s running down the hose. it could be coming from the top of the hose like maybe the top clamp is,nt tight enough or it could be coming from the water pump. if it turns out to be the hose then do like i do. i put some ( indian head shellac ) around the inside of the hoses then i put it on. that will stop it from leaking if it,s the hose.
You should have bought the BMW M3!!!! Which engine is in your Sierra??? You are probably right about the water pump. Be aware that many GM engines (V-6's) have intake manifold and IM leaks that require attention. Apparently, there is a bad chemical reaction between the Dex-cool coolant, and the nylon and rubber compounds in the Intake system. This would account for coolant loss. ADVICE: fix the problem, and then switch to Mercedes Benz coolant, to prevent the return of EITHER issue. Good Luck!!
It could be intake lower manifold gaskit leaking over front of engine.GM had an issue with this.
It could be dripping out the weep hole on the bottom of the waterpump and with the fan pulley in place you really can't see the weep hole, if it is leaking you need to replace the pump as it's on it's way out, get it checked out.