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onslowb
Samba Member
Joined: November 20, 2006
Posts: 315
Location: Woodland Hills
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 Posted: Sun Jul 01, 2012 4:55 pm Post subject: water pump squeeling after replacement |
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I just changed my water pump and upon starting for the first time it's squeeling loudly. I revved the engine once to see if the noise would go away but it just got louder and I got a burning smell and a small puff of smoke from the pulley. Tried tightening and loosening the belt but no change. Reservoir is filled and cap off. Does this sound like a bad pump, or did I do something wrong? Pump is Hepu.
2.1 1987 weekender |
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pioneer1
Samba Member
Joined: February 11, 2008
Posts: 2069
Location: Ontario Canada
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| Posted: Sun Jul 01, 2012 5:03 pm Post subject: |
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remove belt and check the pump pulley for spin,noise & play.
_________________
"Always waiting for tomorrow ruined everything"
'85 Porsche 911 Targa
'76 Westfalia project |
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onslowb
Samba Member
Joined: November 20, 2006
Posts: 315
Location: Woodland Hills
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| Posted: Sun Jul 01, 2012 5:11 pm Post subject: |
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| Checked that and it doesn't seem to be moving or noisy. I expected to start the engine and it would suck up all the antifreeze from the tank but nothing got sucked in. |
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Ahwahnee
Samba Member
Joined: June 05, 2010
Posts: 9810
Location: Mt Lemmon, AZ
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| Posted: Sun Jul 01, 2012 5:28 pm Post subject: |
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| onslowb wrote: |
| Checked that and it doesn't seem to be moving or noisy... |
With the belt off can you spin the H2O pump pulley? |
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onslowb
Samba Member
Joined: November 20, 2006
Posts: 315
Location: Woodland Hills
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| Posted: Sun Jul 01, 2012 7:04 pm Post subject: |
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| Yes. It spins easily and has little to no play. |
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pioneer1
Samba Member
Joined: February 11, 2008
Posts: 2069
Location: Ontario Canada
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| Posted: Sun Jul 01, 2012 7:10 pm Post subject: |
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| onslowb wrote: |
| Checked that and it doesn't seem to be moving or noisy. I expected to start the engine and it would suck up all the antifreeze from the tank but nothing got sucked in. |
The coolant needs to get hot enuf to open the thermostat before it will flow thru or get "sucked" into the rest of the system
_________________
"Always waiting for tomorrow ruined everything"
'85 Porsche 911 Targa
'76 Westfalia project |
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onslowb
Samba Member
Joined: November 20, 2006
Posts: 315
Location: Woodland Hills
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| Posted: Sun Jul 01, 2012 7:47 pm Post subject: |
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| That's what I figured but I thought it would flow in thatdiversion loop around the engine. Is there a step I'm missing bout priming the pump or something? |
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RicoS
Samba Member
Joined: December 02, 2006
Posts: 583
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| Posted: Sun Jul 01, 2012 8:00 pm Post subject: Re: water pump squeeling after replacement |
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| onslowb wrote: |
| I just changed my water pump and upon starting for the first time it's squeeling loudly. |
Check the amount of axial thrust.
I had a van that started to squeal like that chubby, ruddy guy in the movie "Deliverance". I checked, then replaced the H2O Pump belts to no avail. The pump seemed rock solid with no leaks or redial slop. Then I noticed the extreme amount of axial movement.
When I yanked the pump it was obvious what was causing the loud squeal as I could plainly see that the pump impeller was milling away the engine case. As it turned out, the squeal was caused by an extreme case of "tool" chatter.
Richie |
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onslowb
Samba Member
Joined: November 20, 2006
Posts: 315
Location: Woodland Hills
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| Posted: Sun Jul 01, 2012 8:48 pm Post subject: |
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| i took off the smaller hose on the top of the water pump and lots of antifreeze came out....so there is liquid in there. I started the engine with the belt off and it was quiet so it is definitely something with the pump or alternator. I can't see anything else scraping like engine tin or anything. maybe I put the pulley on backwards? |
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