Diesel water pump noisy or is it?

Mdean22 · 8th March 2015, 15:52

Something is not sounding right on my dads 75. It's sounds like a dry bearing but trying diagnose which one is proving difficult. The water pump looks a pain to replace as there is no room. Hope it's not that on its way out.

spyder · 8th March 2015, 16:09

Is it not the crank pulley ? pour some water over it, if it goes quiet then that is a likely suspect. I am busy making a tool to remove mine.

Craig

Mike Noc · 8th March 2015, 18:06

A failing crank pulley and water pump pulley can sound similar. This was the knocking of my water pump on the way out:

https://www.youtube.com/watch?v=cuHeZmkcyrs

With the belt off you can feel for any play or roughness in the water pump, alternator, power steering pump,tensioner or idler pulleys.

Changing the water pump isn't such a bad job, just takes a bit more time due to lack of access.

DMGRS · 9th March 2015, 18:43

We took around 3 hours for a waterpump change on my friend's ZT - it wasn't what I'd term an easy job, but I've done worse.

Usually waterpump bearing failure (the usual failure mode) will result in the pulley appearing lob-sided - the auxiliary belt on the diesel puts a lot of stress on this bearing, so when failed it'll show symptoms quickly.

Pumps aren't too expensive, if this is your problem:
Rover 75 / MG ZT CDTi Waterpump Assembly.

Mdean22 · 15th March 2015, 12:30

Well the water pump has completley failed in style, water everywhere on the side of the m62. Managed to get the car home and about to set to it. Whilst I'm at it should I look at changing anything else?

klarzy · 15th March 2015, 13:21

Quote:

Originally Posted by Mdean22

Well the water pump has completley failed in style, water everywhere on the side of the m62. Managed to get the car home and about to set to it. Whilst I'm at it should I look at changing anything else?

thermostat?

MSS · 15th March 2015, 13:24

Yes - I would also say the thermostat plus the ring.

Also the auxiliary belts if they have not been done before.

8th March 2015, 15:52	#1
Mdean22 Loves to post Mg zt-t mg zr audi a6 defender Join Date: Apr 2014 Location: Halifax Posts: 300 Thanks: 32 Thanked 20 Times in 17 Posts	Diesel water pump noisy or is it? Something is not sounding right on my dads 75. It's sounds like a dry bearing but trying diagnose which one is proving difficult. The water pump looks a pain to replace as there is no room. Hope it's not that on its way out.

8th March 2015, 16:09	#2
spyder This is my second home 75 CDT Auto Tourer , Rover 45 , Astra, Zaffira, Chev Captiva Join Date: Mar 2011 Location: Wilts Posts: 3,342 Thanks: 203 Thanked 436 Times in 360 Posts	Is it not the crank pulley ? pour some water over it, if it goes quiet then that is a likely suspect. I am busy making a tool to remove mine. Craig __________________ Chrome skull caps, EGR cleaned (original housing), Mondeo lower mounting, 12V outlets in the armrest and tourer boot, cat fixed, working FBH, Lidl plenum covers, DD with reverse camera.New speakesr/Tweeters with MDF rings. wood dash, Memory leather seats, wooden finished steering and handbrake, Xenon headlights.

9th March 2015, 18:43	#4
DMGRS Discount MG Rover Spares Rover 75 CDTi, 2x MG ZS180 Join Date: Jun 2011 Location: Hythe, Southampton Posts: 11,354 Thanks: 456 Thanked 3,377 Times in 2,027 Posts	We took around 3 hours for a waterpump change on my friend's ZT - it wasn't what I'd term an easy job, but I've done worse. Usually waterpump bearing failure (the usual failure mode) will result in the pulley appearing lob-sided - the auxiliary belt on the diesel puts a lot of stress on this bearing, so when failed it'll show symptoms quickly. Pumps aren't too expensive, if this is your problem: Rover 75 / MG ZT CDTi Waterpump Assembly. __________________ Your trusted MG Rover specialist! Tel: 02380 001133 / Email: [email protected] We now have a 'chat' function on our site for even quicker replies. Give it a try! Remember - discount code FORUM5 for 5% off

8th March 2015, 18:06	#3
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,570 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	A failing crank pulley and water pump pulley can sound similar. This was the knocking of my water pump on the way out: https://www.youtube.com/watch?v=cuHeZmkcyrs With the belt off you can feel for any play or roughness in the water pump, alternator, power steering pump,tensioner or idler pulleys. Changing the water pump isn't such a bad job, just takes a bit more time due to lack of access.

15th March 2015, 12:30	#5
Mdean22 Loves to post Mg zt-t mg zr audi a6 defender Join Date: Apr 2014 Location: Halifax Posts: 300 Thanks: 32 Thanked 20 Times in 17 Posts	Well the water pump has completley failed in style, water everywhere on the side of the m62. Managed to get the car home and about to set to it. Whilst I'm at it should I look at changing anything else?

15th March 2015, 13:24	#7
MSS This is my second home Rover 75CDT, Jaguar XF-S 3.0V6, V'xhall Omega V6 Estate, Twintop 1.8VVT, Astra Estate and Corsa 1.2 Join Date: Dec 2007 Location: Suffolk Posts: 7,094 Thanks: 283 Thanked 624 Times in 440 Posts	Yes - I would also say the thermostat plus the ring. Also the auxiliary belts if they have not been done before.