Strange knocking noise from engine.

Southern Star · 30th March 2024, 09:53

Hello, I have an issue with my 75CDTi which I can't work out and wonder if anyone knows what it might be.

Starts up ok, after about 5 seconds a loud rhythmic knocking noise starts up, maybe 4-6 beats per second, this is coming from somewhere near the power steering pump. When the engine is revved up it disappears. When engine returns to tickover it reappears. If the engine is turned off and on again, again it starts normally and the noise appears after 5 seconds or so. Turning the steering wheel has no effect.

Is this a known fault and if so what is it?

dave lincs · 30th March 2024, 10:03

Crank pulley very possibly failing which is a known issue or could just be a worn belt

Southern Star · 30th March 2024, 10:07

Thanks, belts were all new about a year ago, one of the other boaters here just has a listen and said it sounds like the cam chain.

Will get it in to the garage next week.

Southern Star · 30th March 2024, 10:22

A bit more reading of the forum and it does seem like it's the crank pulley. Couldn't have failed at a worse time really. I see DMGRS sell their own pulley for £99 or genuine Corteco for £215, obviously that's a big difference, any advice re which to get?

Popcorn · 30th March 2024, 11:46

I had a corteco fitted couple of years ago, been great since

https://www.ebay.co.uk/itm/175325741...mis&media=COPY cheaper than dmgr

MissMoppet · 30th March 2024, 11:46

Quote:

Originally Posted by Southern Star

A bit more reading of the forum and it does seem like it's the crank pulley. Couldn't have failed at a worse time really. I see DMGRS sell their own pulley for £99 or genuine Corteco for £215, obviously that's a big difference, any advice re which to get?

Few years ago my DMGRS pulley collapsed after little more than a year: they give me some refund and I bought the Corteco but I don't remember it quite as much as that.

SteveThackery · 30th March 2024, 16:28

Quote:

Originally Posted by Southern Star

Starts up ok, after about 5 seconds a loud rhythmic knocking noise starts up, maybe 4-6 beats per second, this is coming from somewhere near the power steering pump. When the engine is revved up it disappears. When engine returns to tickover it reappears. If the engine is turned off and on again, again it starts normally and the noise appears after 5 seconds or so. Turning the steering wheel has no effect.

Any chance of a recording / video?

Southern Star · 30th March 2024, 18:35

Quote:

Originally Posted by SteveThackery

Any chance of a recording / video?

It's dark now but I will take a video tomorrow and post it here (if I can work out how to

)

Southern Star · 30th March 2024, 20:54

I've found this at £139.

https://www.ecarparts.org/ROVER-75-M...PART-LHG100751

I've ordered a lot of parts from DMGRS in the past and I can't fault them but they are charging £219 for the same part. I just wondered if anyone has bought from this suppler before?

SD1too · 31st March 2024, 07:25

Quote:

Originally Posted by Southern Star

https://www.ecarparts.org/ROVER-75-M...PART-LHG100751
I just wondered if anyone has bought from this suppler before?

Yes I have; it's BS Motors in Sandy, Bedfordshire, an X-Part agent. You won't go wrong with them for parts.

Simon

30th March 2024, 09:53	#1
Southern Star Loves to post Rover 75 CTDi Contemporary SE Join Date: Jul 2013 Location: Stretton-under-Fosse, Warwickshire. Posts: 358 Thanks: 54 Thanked 134 Times in 83 Posts	Strange knocking noise from engine. Hello, I have an issue with my 75CDTi which I can't work out and wonder if anyone knows what it might be. Starts up ok, after about 5 seconds a loud rhythmic knocking noise starts up, maybe 4-6 beats per second, this is coming from somewhere near the power steering pump. When the engine is revved up it disappears. When engine returns to tickover it reappears. If the engine is turned off and on again, again it starts normally and the noise appears after 5 seconds or so. Turning the steering wheel has no effect. Is this a known fault and if so what is it?

30th March 2024, 10:03	#2
dave lincs Posted a thing or two Rover 75 Saloon Join Date: Mar 2014 Location: Louth Posts: 1,428 Thanks: 380 Thanked 986 Times in 476 Posts	Crank pulley very possibly failing which is a known issue or could just be a worn belt

30th March 2024, 10:07	#3
Southern Star Loves to post Rover 75 CTDi Contemporary SE Join Date: Jul 2013 Location: Stretton-under-Fosse, Warwickshire. Posts: 358 Thanks: 54 Thanked 134 Times in 83 Posts	Thanks, belts were all new about a year ago, one of the other boaters here just has a listen and said it sounds like the cam chain. Will get it in to the garage next week.

30th March 2024, 10:22	#4
Southern Star Loves to post Rover 75 CTDi Contemporary SE Join Date: Jul 2013 Location: Stretton-under-Fosse, Warwickshire. Posts: 358 Thanks: 54 Thanked 134 Times in 83 Posts	A bit more reading of the forum and it does seem like it's the crank pulley. Couldn't have failed at a worse time really. I see DMGRS sell their own pulley for £99 or genuine Corteco for £215, obviously that's a big difference, any advice re which to get?

30th March 2024, 11:46	#5
Popcorn Loves to post 55 cdti tourer slush box executive grill Join Date: Feb 2022 Location: Sheffield Posts: 388 Thanks: 40 Thanked 85 Times in 72 Posts	I had a corteco fitted couple of years ago, been great since https://www.ebay.co.uk/itm/175325741...mis&media=COPY cheaper than dmgr

30th March 2024, 20:54	#9
Southern Star Loves to post Rover 75 CTDi Contemporary SE Join Date: Jul 2013 Location: Stretton-under-Fosse, Warwickshire. Posts: 358 Thanks: 54 Thanked 134 Times in 83 Posts	I've found this at £139. https://www.ecarparts.org/ROVER-75-M...PART-LHG100751 I've ordered a lot of parts from DMGRS in the past and I can't fault them but they are charging £219 for the same part. I just wondered if anyone has bought from this suppler before?