XK8 / XKR ( X100 ) 1996 - 2006

Knocking from rear when cold

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Old Aug 20, 2025 | 04:56 AM
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Default Knocking from rear when cold

Have a knocking/clunking noise almost like metal on metal from rear when engine is cold, disappears after about 10 mins, its constant with wheel speed but only when decelerating , sounds like the half shaft is hitting something but can't see anything???
 
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Old Aug 20, 2025 | 06:45 AM
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From: Elkin N.C.
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Half shaft joint maybe.

Jack
 
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Old Aug 20, 2025 | 07:35 AM
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Originally Posted by Wafoo
Have a knocking/clunking noise almost like metal on metal from rear when engine is cold, disappears after about 10 mins, its constant with wheel speed but only when decelerating , sounds like the half shaft is hitting something but can't see anything???
If only when cold, maybe over axle pipe and uni joint contact, heat creating clearance and pendulum effect of rear end on deceleration?
Check your hangers above diff pinion.
 

Last edited by baxtor; Aug 20, 2025 at 07:36 AM.
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Old Aug 20, 2025 | 07:39 AM
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The half-shafts have zerk grease fittings. Have they been attended to recently ?

Z
 
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Old Aug 22, 2025 | 01:47 AM
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God is your wife still in the boot?
 
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Old Aug 22, 2025 | 01:57 AM
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Originally Posted by Pistnbroke
God is your wife still in the boot?
No, she's the high pitched squealing from the front...🤣
 
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Old Aug 23, 2025 | 10:02 AM
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Originally Posted by baxtor
If only when cold, maybe over axle pipe and uni joint contact, heat creating clearance and pendulum effect of rear end on deceleration?
Check your hangers above diff pinion.
Well thankyou, popped Gerald on axle stands and had a look at the half shaft exhaust clearance, it was about 2mm, put a ty wrap on the exhaust and round the anti roll bar to see if I could get an extra 1mm on there, well job done, no noise, so put a new exhaust hanger on and jobs a good un as we say, thankyou 🙂
 
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