Cv boot causing knocking?

[danh90]

Noticed my cv joint has come away slightly and chucked grease out. I've developed a knocking sound coming from the passenger side, same side as shot cv boot

Dan

 

[danh90]

Forgot to ask main question ha

Can a gone cv cause knocking

 

[Feates172]

Yeah. Mine is the same but drivers side.

 

[danh90]

New drive shaft needed or can you get new boot

 

[Feates172]

I havent looked into it yet. Pretty sure its a new driveshaft now. Mine been knocking for months though.

You could just cut it off, fit a new one. See if it stops knocking. If not then driveshaft time.

Cheap enough through renparts anyway.

 

[Addicted]

If it's knocking without turning on full steering lock I'd say it's new shaft time.

If it knocks on full lock (reversing etc) and you catch it in time you should just be able to regrease+reseat it.

 

[MartinR]

^^^This

 

[Feates172]

mine knocks whilst turning left, not on full lock though? mines the drivers side outer boot. clip for securing it to the shaft snapped off.

think ill get away with a new boot and grease? or is it shaft time? im thinking shaft, but i havent replaced one before so trying to ignore it.

 

[Chip-mk1]

Danh90, the boot is there to stop the grease escaping, the grease is there to stop the joint wearing excessively quickly.

Replacing the boot after the joint has worn out is about as much use as opening a window after you have thrown a ball through it.

You dont just need a new boot, you need a new joint/shaft. As given the power you will be putting through it even if you can shut it up a bit with more grease, it will still die soon anyway if its already worn.

 

[Rob]

Danh90, the boot is there to stop the grease escaping, the grease is there to stop the joint wearing excessively quickly.

Replacing the boot after the joint has worn out is about as much use as opening a window after you have thrown a ball through it.

You dont just need a new boot, you need a new joint/shaft. As given the power you will be putting through it even if you can shut it up a bit with more grease, it will still die soon anyway if its already worn.

Bang on the money.

Not sure why it took so long to get there with the other answers though.

 

[danh90]

Cheers for answers will get new pass shaft

 

[Rob]

New is often £££, personally I'd call renparts, just make sure it's off the EXACT same car.

 

[danh90]

Think DannyR has a couple from a ph1 so will give him a tinkle

 

[Rob]

If he fails, call renparts.

 

[danh90]

Hopefully sorted one its got right bad now constantly knocking and loud

 

[Feates172]

Yours is the inner boot then im guessing?

 

[danh90]

My outer one (next to hub) has gone why shouldn't it make that noise?

 

[Feates172]

Mines the outer one too, and only knocks whilst turning.

Whereas my mate has a cup with the n/s inner boot shot and knocks all the time.

 

[danh90]

I must of done both then knocks constantly. Now that's unlucky

 

[Feates172]

It may just be the outer one.

I dont know enough to say if they make different noises.

But mine has been like this since before the mot in november, and doesnt knock unless turning left.

Hope u get it sorted soon mate.

 

[danh90]

when i put pressure on the wheel with the knackerd driveshaft and sort of wiggle it there is a knocking too is that the driveshaft also

 

[Chip-mk1]

More than likely yes if you mean when it's jacked up. If not its probably a knackerd shock.

 

[danh90]

No it was on the floor I put my knee against the top with force and there was knocking same sound as its doing while driving.

Hopefully not the frigging shock one thing after another at minute. Fitting new shaft tommorow hopefully that will sort it all

 

[Chip-mk1]

Shaft should see exactly zero load when you press on the top of the wheel with your knee.

its one of:
top mount
shock
shock to hub bolts.
Track rod end or track rod or rack mounts.
Loose wheel nuts.
Wheel bearing
Loose cv nut



Something was allowing movement that shouldn't be there.

 

[danh90]

Ah right :/. Will get the wheel off and it all jacked up and see if anything is loose that shouldn't be and if anything has play in it.

Whatever it is now I hope it's not a big outlay

 

[Chip-mk1]

Nothing there is particularly expensive.

 

[KFRRS94]

Shaft should see exactly zero load when you press on the top of the wheel with your knee.

its one of:
top mount
shock
shock to hub bolts.
Track rod end or track rod or rack mounts.
Loose wheel nuts.
Wheel bearing
Loose cv nut



Something was allowing movement that shouldn't be there.

Hate posts like this makes me paranoid. Need to get the car jacked up after work now and check these things.

Has anybody had a new drive shaft fitted? If so how much did it cost?