Rattle from cambelt area

[Jonff]

I've got a disconcerting rattle from around the cambelt area, sounds like it's around where the dephaser is. It's not your usual worn out dephaser noise as I've had that in the past, this sounds like something is loose. The noise isn't apparent while the engine is idling but as soon as you rev the engine the noise appears. Can hear it rattling while driving with the driver's window down as well. Engine is an F4R.

Anyone have any ideas?

 

[Jamesstone]

Checked the basics, Engine cover/ Fuel rail gaurd?

 

[Jonff]

I have yeah, there doesn't appear to be anything loose in that respect.

 

[Jonff]

Just taken a video of the noise, I've had to do with the bonnet down because the camera doesn't pick the noise up with the bonnet up, the engine seems to drown it out.

http://www.youtube.com/watch?v=uo-40m0IBn8&feature=youtu.be

 

[MartinR]

Mine sounded like that when the waterpump gave up

 

[Jonff]

The waterpump has crossed my mind tbh. Did you have any other visible signs of it failing? i.e was it wet around the pump area?

 

[Jonff]

I'm going to remove the Aux Belt tomorrow and start the car, if the noise has gone I'll know the issue is with the auxbelt or one of the things it drives.

 

[MartinR]

The waterpump has crossed my mind tbh. Did you have any other visible signs of it failing? i.e was it wet around the pump area?

Nope no other signs at all just noise.

Here is a video of the noise once removed so you can get the idea of how noisy it was when fitted.

[video=youtube_share;X4LfE4UssSw]http://youtu.be/X4LfE4UssSw[/video]

 

[Jonff]

Cheers mate.

Hopefully mine is the same issue as it's not that difficult to replace.

 

[DaveDreads]

F*ck me that's what the noise is in mine!!
I've had a metallic rattle that increases with revs for a while now.

I'll add water pump to list of things that need doing.

 

[davo172]

Mine sounded like that when the waterpump gave up

Are you sure it wasnt your dephaser mart ????

 

[Dr HMS Derv Destroyer]

F*ck me that's what the noise is in mine!!
I've had a metallic rattle that increases with revs for a while now.

I'll add water pump to list of things that need doing.

Te old s**t box has /had that rattle ( not the DCI lol ) metal impeller pumps only!! Plastic ones don't last long from experience

 

[MartinR]

Are you sure it wasnt your dephaser mart ????

No comment lol

Definitely waterpump

 

[Fred@BTM]

quick get to TCR they are the best!

 

[MartinR]

quick get to TCR they are the best!

 

[Jonff]

I've replaced the water pump but the rattling noise is still there. I ran the car without the auxbelt on and the noise isn't there so it must be either the alternator of the PAS pump that's the culprit.

Taken a video which I'll post once it's uploaded. The noise in the engine bay this time. It's a bit strange, it sounds like when you put a stick in a rotating bicycle wheel and run it across the spokes as it turns lol

 

[Jonff]

Finally uploaded.

 

[Cookson]

Sure its not the aux tensioner?

 

[Jonff]

I don't have one Phil, that got binned when I fitted the air-con delete kit.

 

[Cookson]

Weird as f**k.

Only other thing i can think of would be exhaust manifold gasket. they make a ticking noice when they crack

 

[Jonff]

It's definitely something being driven off the Aux belt. If I remove the belt and run the car that weird rattling noise disappears. It'll just have be done via process of elimination, I've got a spare PAS pump so I'll do that next, if that doesn't solve the problem I'll have to change the alternator

 

[Jonff]

Replaced PAS pump and I've still got this annoying rattle. Next thing is to replace the alternator. If it's not that then I'm all out of ideas

 

[Dan519]

Aircon pump?

 

[Mr R.]

Its not the idle pullie for the aux belt?

 

[Jonff]

Aircon pump?

Its not the idle pullie for the aux belt?

Both have been removed since removing my air con.

 

[Mr R.]

Well it ain`t gonna be that then....lol

 

[Jonff]

Well it ain`t gonna be that then....lol

Lol. Aye, like I've mentioned earlier in the thread, if I run with car without the aux belt on the noise isn't there so it's definitely something that's being driven by the auxbelt. I've replaced everything other than the alternator so that's what I'll have to try next.

 

[Dan@SJM]

Have you replaced the water pump?

 

[Jonff]

I have yeah Dan.

 

[Dan@SJM]

Well double check it. Just as its new doesn't mean it's fine. You can check the alt by getting an old belt and wrapping it around it and pulling the belt out like a yoyo, this spins the alt upto almost idle speeds.

 

[Jonff]

Will do and I'll try that with the alternator as well.

As for the water pump, when I removed the old one and shook it I could hear something inside it rattling, this is what made me think the pump was the culprit. The new pump did appear to be fine though, span round with no obscure noises.

 

[Dan519]

Will do and I'll try that with the alternator as well.

As for the water pump, when I removed the old one and shook it I could hear something inside it rattling, this is what made me think the pump was the culprit. The new pump did appear to be fine though, span round with no obscure noises.

check it's not fouling something now it's fitted. I've seen that a few times. Genuine pump used?

 

[Jonff]

Yeah genuine pump. I span the pulley after fitting it and it wasn't catching on anything so I don't think it's fouling anywhere

 

[Jonff]

Looks like the alternator was the problem. Replaced it today and the rattle has gone