water pump gone?
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From: Southern Alberta, Canada
I know there's an engine noise that wasn't there before; I'll also try the stethescope............-7C this morning so its near time for hibernation
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From: Double Oak, TX
Malcolm,
Hoses were supplied in August 2007.
Roger
Hoses were supplied in August 2007.
Roger
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
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928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
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From: Southern Alberta, Canada
thx Roger................you got water pumps in stock?
I may give serious thought of hauling the engine; rod brgs, silicone sump gasket, valve cover gskts, cam chains and tensioner pads or get the spare motor Garth suggests.
I may give serious thought of hauling the engine; rod brgs, silicone sump gasket, valve cover gskts, cam chains and tensioner pads or get the spare motor Garth suggests.
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What does the noise sound like? Squeel, grind, rub, fast tick, groan....? If the WP bearing took a dump, it would leak fluid down around the crank and onto the pan. Faulty hoses or clamps make no noises. However, fluid dripping on utility belts do. Of course, do not run the car anymore until you figure it out and fix.
Sorry to hear of this Malcolm, I hope you get it figured out and repaired in the least expensive way.
Sorry to hear of this Malcolm, I hope you get it figured out and repaired in the least expensive way.
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From: Southern Alberta, Canada
What does the noise sound like? Squeel, grind, rub, fast tick, groan....? If the WP bearing took a dump, it would leak fluid down around the crank and onto the pan. Faulty hoses or clamps make no noises. However, fluid dripping on utility belts do. Of course, do not run the car anymore until you figure it out and fix.
Sorry to hear of this Malcolm, I hope you get it figured out and repaired in the least expensive way.
Sorry to hear of this Malcolm, I hope you get it figured out and repaired in the least expensive way.
)The noise is a rub/ groan, more pronounced when cold...........perhaps the WP bearing. I'm quite positive its not a hose, there's no fluid on the belts or at either side of the car, dead centre. Its quite cold this morning so I'll wait a bit before starting and lift her up for a more indepth look.
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From: saratoga, ca
thats usually not the issue, as i most always dont change the pump unless i feel some movement or its making noise like you suggest. (ive had as much bad luck with changing good pumps as i have with very old pumps.)
the noise is always more pronounced when cold and on start up . It will be an intermittant sound that sounds like a whinning, or belt squeeling sound.
mk
the noise is always more pronounced when cold and on start up . It will be an intermittant sound that sounds like a whinning, or belt squeeling sound.
mk
thx Keith............it was my decision to not change the WP when I did the tbelt/porkentensioner last year; as mentioned its almost the end of the season so it could be worse and the car is home not stranded (my cup is half full )
The noise is a rub/ groan, more pronounced when cold...........perhaps the WP bearing. I'm quite positive its not a hose, there's no fluid on the belts or at either side of the car, dead centre. Its quite cold this morning so I'll wait a bit before starting and lift her up for a more indepth look.
)The noise is a rub/ groan, more pronounced when cold...........perhaps the WP bearing. I'm quite positive its not a hose, there's no fluid on the belts or at either side of the car, dead centre. Its quite cold this morning so I'll wait a bit before starting and lift her up for a more indepth look.
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From: Southern Alberta, Canada
Not much time today...........Thanksgiving and all that entails.
I did start the car and got it to full op. temp. with the rad. fans going....................NO leak but noise does seem prevalent.
Is it possible the pump seals itself but still 'groans'? If it is leaking can it be seen by taking off the passenger cam cover?
I did start the car and got it to full op. temp. with the rad. fans going....................NO leak but noise does seem prevalent.
Is it possible the pump seals itself but still 'groans'? If it is leaking can it be seen by taking off the passenger cam cover?
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Not much time today...........Thanksgiving and all that entails.
I did start the car and got it to full op. temp. with the rad. fans going....................NO leak but noise does seem prevalent.
Is it possible the pump seals itself but still 'groans'? If it is leaking can it be seen by taking off the passenger cam cover?
I did start the car and got it to full op. temp. with the rad. fans going....................NO leak but noise does seem prevalent.
Is it possible the pump seals itself but still 'groans'? If it is leaking can it be seen by taking off the passenger cam cover?
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From: Southern Alberta, Canada
This is what scares me..............the tbelt is new with Kens tensioner but the WP was left as it looked and felt good. The antifreeze is even the 'blue' Audi/Porsche stuff. The hoses are new, the clamps are tight............the bridge is tight from what I can see from the outside.
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It seems the consensus is a bad WP bearing. Personally, I would park the car and not start it up until I tore it down and pulled the WP. Because of the impeller clearance to the water channel milled into the block, a WP bearing just completely giving out can potentially shread the channel causing more issues than you would want to deal with. You are lucky right now...take advantage of this and pull it apart and get that WP out of there to inspect and replace if you have to. You should be able to have the WP in your hands in less than 2 hours.
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My old '86.5 made a wierd wurr-wurr noise at the front of the engine, which eventually got louder. After removing all the accessory belts, I finally determined it was the old rebuilt water pump (which I also didn't bother to replace when I did the TB).
IIRC, the old pump didn't have any play, but the pulley spun too quickly by hand with the timing belt removed.
IIRC, the old pump didn't have any play, but the pulley spun too quickly by hand with the timing belt removed.
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From: Southern Alberta, Canada
Did it leak Ken?
I'm going in tomorrow regardless; can't take the chance although I do find it intersting from a tech perspective that it leaked enough to need fluid but its not leaking now.
I'm going in tomorrow regardless; can't take the chance although I do find it intersting from a tech perspective that it leaked enough to need fluid but its not leaking now.
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Malcolm...If you need a hand I can drop by at the end of the month...Between work and a trip to NY that is the earliest available. If you're still considering pulling the motor I have everything you need.
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From: Southern Alberta, Canada
Very generous Mike; thank you. 
Here's an update; verified with Roger that all hoses were replaced last summer but not the clamps. I went over all clamps and giving each a tweek and when doing so noticed that where the engine number is stamped below the upper rad hose was a very small film of antifreeze.
A thought; when I did the intake R&R I replaced the oil filler tube and cleaned out the engine castings and the LH side had some AF in it. Question is if the upper rad hose had a minor weep would it leak into the casting and eventually down the middle of the engine.............I still need to get the car in the air.
All this thinking doesn't explain the 'noise' that doesn't seem so loud today.
Here's an update; verified with Roger that all hoses were replaced last summer but not the clamps. I went over all clamps and giving each a tweek and when doing so noticed that where the engine number is stamped below the upper rad hose was a very small film of antifreeze.
A thought; when I did the intake R&R I replaced the oil filler tube and cleaned out the engine castings and the LH side had some AF in it. Question is if the upper rad hose had a minor weep would it leak into the casting and eventually down the middle of the engine.............I still need to get the car in the air.
All this thinking doesn't explain the 'noise' that doesn't seem so loud today.