Rover 75 diesel knock at front offside

zaph · 17th May 2023, 18:48

Yes I know what you're going to say, failed ball joint or rear bush on front suspension. The problem is I replaced all the front suspension and assuming the knock was my fault, from incorrect fitting, had my local independent garage put the car on a ramp and check it. They couldn't find any movement.

I have also replaced the lower engine mount and that seems Ok. So I baffled by the knocking sound I am getting from the front offside when I setting off. Has anyone got any suggestions as to what it could be?

suzublu · 17th May 2023, 19:30

Drop links 😎

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Popcorn · 17th May 2023, 21:00

Possibly drive shaft outer joint, drive shaft inner joint, caliper, caliper mount, pads, diff,loose wheel, that should give you a few things to check, after all that I'm scratching my head

Rogue · 17th May 2023, 22:15

Check the anti roll bar bushes just behing the steering rack.

hogweed · 18th May 2023, 11:48

This may not be very helpful, but I had the same thing on mine, and everything replaced. Turned out to be part of the actual hub - I can't remember how it all fits together, but there's a kind of clamp joint on it somewhere, where a bolt goes through and tightens it on something.

The surfaces inside the joint had worn oval, so it rattled - apparently it could be hard to detect unless you know what you're looking for, but my guy fitted a good used hub, and... silence

A while after that, it started on the other side - this time the hub was OK, but the bolt was worn and reduced in diameter,so a new bolt fixed it.

Might be worth checking

Ducati750cc · 19th May 2023, 07:49

Did you replace the suspension leg top mounts/bearings ?

xsport · 19th May 2023, 14:11

Ditto ... Hoogweed. That eventually was the cause of mine. After renewal of all other front suspension related parts , this indeed was the culprit. Even jacked up with the car up high there was no movement up or down that could be seen, and the hub clamps were nice and tight . Once the car was off the floor the coil springs kept the hub firmly planted at the base of the clamp , and avoids detection. I even renewed wheel bearings to sort it but eventually after changing the hub .. bingo.

Mike Noc · 20th May 2023, 09:19

Had a couple of those over the years - with the wheel jacked up and secured you should be able to feel play by moving the wheel in and out, and then look from underneath to check whether the play is in the hub clamp or ball joint itself.

17th May 2023, 18:48	#1
zaph Avid contributor Rover 75 Join Date: May 2015 Location: Leeds Posts: 135 Thanks: 0 Thanked 17 Times in 11 Posts	Rover 75 diesel knock at front offside Yes I know what you're going to say, failed ball joint or rear bush on front suspension. The problem is I replaced all the front suspension and assuming the knock was my fault, from incorrect fitting, had my local independent garage put the car on a ramp and check it. They couldn't find any movement. I have also replaced the lower engine mount and that seems Ok. So I baffled by the knocking sound I am getting from the front offside when I setting off. Has anyone got any suggestions as to what it could be?

17th May 2023, 22:15	#4
Rogue I really should get out more....... 75 CDT SE 160 Saloon Join Date: May 2017 Location: Thorpe St Andrew, Norwich Posts: 2,679 Thanks: 1,386 Thanked 1,096 Times in 774 Posts	Check the anti roll bar bushes just behing the steering rack. __________________ Glutton for punishment --- Previously ... 2.6 SD1 x 2, 3.5 SD1, 820S, 820Si x2, 216 Gsi, 220T saloon, 414, 45 1.4 x2 and now a Cowley 75 CDT

18th May 2023, 11:48	#5
hogweed I really should get out more....... Vauxhall Insignia CDTi; MG TF 135 Join Date: Jan 2010 Location: Norn Iron Posts: 2,968 Thanks: 942 Thanked 378 Times in 297 Posts	This may not be very helpful, but I had the same thing on mine, and everything replaced. Turned out to be part of the actual hub - I can't remember how it all fits together, but there's a kind of clamp joint on it somewhere, where a bolt goes through and tightens it on something. The surfaces inside the joint had worn oval, so it rattled - apparently it could be hard to detect unless you know what you're looking for, but my guy fitted a good used hub, and... silence A while after that, it started on the other side - this time the hub was OK, but the bolt was worn and reduced in diameter,so a new bolt fixed it. Might be worth checking __________________ Past cars: MGB GT; Escort 1300 Sport; Vauxhall VX4/90; Marina Coupe TC; Celica ST (1972); Montego Turbo; Astra GTE 16V; Astra GSI 16V; Golf GTI 16V (Mk II); Sierra XR4x4 Estate; BMW 325i (E30); BMW M3 3.0; BMW M3 3.2 Evo. Left some of the more embarrassing ones out. And about 30 motorbikes.

19th May 2023, 07:49	#6
Ducati750cc Loves to post Rover75 tourer Join Date: Jun 2018 Location: Ashton Posts: 431 Thanks: 121 Thanked 206 Times in 145 Posts	Did you replace the suspension leg top mounts/bearings ? __________________ Common sense isn't a gift, it's a punishment because you have to deal with everyone who doesn't have it.

17th May 2023, 19:30	#2
suzublu This is my second home rover 75 1.8 vvc club se wedgwood blue Join Date: Aug 2009 Location: Seaton Carew Posts: 26,951 Thanks: 65 Thanked 7,142 Times in 4,642 Posts	Drop links 😎 Sent from my SM-A326B using Tapatalk

17th May 2023, 21:00	#3
Popcorn Loves to post 55 cdti tourer slush box executive grill Join Date: Feb 2022 Location: Sheffield Posts: 391 Thanks: 40 Thanked 85 Times in 72 Posts	Possibly drive shaft outer joint, drive shaft inner joint, caliper, caliper mount, pads, diff,loose wheel, that should give you a few things to check, after all that I'm scratching my head

19th May 2023, 14:11	#7
xsport Posted a thing or two rover 75 club se Join Date: Apr 2011 Location: Leicester Posts: 1,718 Thanks: 358 Thanked 419 Times in 310 Posts	Ditto ... Hoogweed. That eventually was the cause of mine. After renewal of all other front suspension related parts , this indeed was the culprit. Even jacked up with the car up high there was no movement up or down that could be seen, and the hub clamps were nice and tight . Once the car was off the floor the coil springs kept the hub firmly planted at the base of the clamp , and avoids detection. I even renewed wheel bearings to sort it but eventually after changing the hub .. bingo.

20th May 2023, 09:19	#8
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: 11,569 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Had a couple of those over the years - with the wheel jacked up and secured you should be able to feel play by moving the wheel in and out, and then look from underneath to check whether the play is in the hub clamp or ball joint itself.