Musn't grumble; my BX does, though...

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cauchoiskev
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Musn't grumble; my BX does, though...

Post by cauchoiskev » Fri Feb 02, 2007 7:18 pm

Maybe someone out there will recognise these symptoms : what I can only describe as a sort of low grumbling noise from the engine compartment at low speed, particuliarly with the foot completely off the throttle.

Foot on the clutch, the noise disappears, so it looks like it's something in the drive train. The frequency of the sound doesn't seem related to speed or revs, and isn't more noticeable in bends.

Both front wheels have about 6cm slack measured at the tyre tread when the wheel is lifted, so that includes the driveshaft and the gearbox. There is no knocking on cornering, and no "snatch" when accelerating from low speed. All the engine mounts are new.

There is also a mild clutch problem, as I still have a bit of judder despite changin all the engine mounts. Don't see what that can have to do with the grumble, though ???

Confused ? I am :roll: .

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Kitch
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Post by Kitch » Fri Feb 02, 2007 7:29 pm

Sounds like the release bearing to me. Nearly all my cars have noisy ones, I just live with it. Although if its juddering thats a bit more concerning, could be a leaky crank seal or a burnt face on the flywheel.

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cauchoiskev
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Post by cauchoiskev » Sun Feb 04, 2007 11:11 am

Do you reckon the release bearing could cause the grumble even with the clutch fully out, Tim ? It doesn't seem to slip.

In fact, I do have a new clutch in my "things to do" box, but I'm a bit worried about the diffuiculty of the job. And of course, if it's a warped flywheel, a new clutch won't make a damn bit of difference...

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Post by jeremy » Sun Feb 04, 2007 11:27 am

If the rear crankshaft seal is leaking its likely the oil will run round the back of the flywheel, be collected by the bell housing and drain harmlessly onto your nice new drive when the car is stopped.

Clutch judder can be a sign of a worn plate or presser or even the diaphragm spring disintegrating. If the release bearing is audible - then its a fair age.

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Post by Kitch » Sun Feb 04, 2007 11:34 am

cauchoiskev wrote:Do you reckon the release bearing could cause the grumble even with the clutch fully out, Tim ? It doesn't seem to slip.

In fact, I do have a new clutch in my "things to do" box, but I'm a bit worried about the diffuiculty of the job. And of course, if it's a warped flywheel, a new clutch won't make a damn bit of difference...
Noisy release bearings only occur when the clutch is fully released in my experience. Whenever you push the pedal, the noise goes away.

I'm not Tim BTW

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cauchoiskev
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Post by cauchoiskev » Sun Feb 04, 2007 1:19 pm

Kitch wrote:I'm not Tim BTW
Oops, sorry mate :oops: ! No offence intended !

Kevin

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Post by Kitch » Sun Feb 04, 2007 4:18 pm

I'm not Kevin either :P

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cauchoiskev
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Post by cauchoiskev » Sun Feb 04, 2007 7:49 pm

Kitch wrote:I'm not Kevin either :P
Lucky b*s***d !

tim leech

Post by tim leech » Sun Feb 04, 2007 9:18 pm

Kitch wrote:
cauchoiskev wrote:Do you reckon the release bearing could cause the grumble even with the clutch fully out, Tim ? It doesn't seem to slip.

In fact, I do have a new clutch in my "things to do" box, but I'm a bit worried about the diffuiculty of the job. And of course, if it's a warped flywheel, a new clutch won't make a damn bit of difference...
Noisy release bearings only occur when the clutch is fully released in my experience. Whenever you push the pedal, the noise goes away.

I'm not Tim BTW
Lol nope I dont have a beard!

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docchevron
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Post by docchevron » Mon Feb 05, 2007 12:43 am

You should get one mate, it's a growing trend in BX ownership!

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Far too many BX's, a bus, an ambulance a few trucks, not enough time and never enough cash...

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Post by Kitch » Mon Feb 05, 2007 10:02 am

Beards are for winners......if you own a BX.

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Post by tom » Mon Feb 05, 2007 9:50 pm

The nois you describe sounds like it may be due to a worn driveshaft.
Vive les UX.

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cauchoiskev
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Post by cauchoiskev » Mon Feb 05, 2007 10:41 pm

Yep, that's a possibility I've considered Tom.

But I think I'm going to change the control arm bushes first just too see, as they are probably original and a damn sight cheaper than a pair of driveshafts.