Steve Jones Posted March 22, 2010 Share Posted March 22, 2010 After a great blat with the Herts crew made nerve wracking only by the insistent noise from behind, I ran the car up the trailer ramps when I got home to see if I could work out what the rat-tat-tat sound was. Looks like it was indeed the brake cable hitting the driveshaft where it inserts into the diff. I'll find out on the next run. But of more concern is the fact that it had slipped because on that drivers side only there was loads of grease/oil splattered on the walls and frame. . Noticeably only on one side which suggests to me that the diff is leaking from that driveshaft access point. I'd be interested to know what people think this is most likely to be..... Steve Guaranteed banal profundities Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted March 22, 2010 Share Posted March 22, 2010 If it is grease, check the boot on the CV joint ? Link to comment Share on other sites More sharing options...
Martin Erhard Posted March 22, 2010 Share Posted March 22, 2010 If it's black gungy goo then it's grease out of a CV joint which has split. If you are getting a knocking noise from the rear DO check before you go out that one end of the anti roll bar has not sheared. This and the drop link can flap around before being propelled by the wheel through the fuel tank. Link to comment Share on other sites More sharing options...
akakubi Posted March 22, 2010 Share Posted March 22, 2010 Could be the diff breather. Mine was spewing oil out of it like mad under hard use. I now affixed a "catch tank" of sorts to stop it. Link to comment Share on other sites More sharing options...
Trotsky Posted March 22, 2010 Share Posted March 22, 2010 Do you have a oil catch tank? if so check it isnt full, mine gets oily underneath when tank is full and starts throwing it out of the catch tank overflow pipe and all underneath the floor of the car. stops when catchtank drained. Trotsky N7 HPC Clams and Brooklands Link to comment Share on other sites More sharing options...
charlie_pank Posted March 22, 2010 Share Posted March 22, 2010 Give it a sniff that'll tell you whether it's grease from the CV joint or oil from the diff. If it's oil from the diff - you need to know if it's coming out of the oil seal or from the breather - and if the diff has been way down on oil for ages, maybe it's mangled and that's what the tapping was. Is it possible to put it up on stands and then turn the propshaft by hand to see if it still makes the nasty noises? If nasty noises are gone, clean up the spillage, top the diff up with oil, fit a catch tank and then drive for a bit. C back here because I want to be. Link to comment Share on other sites More sharing options...
Steve Jones Posted March 23, 2010 Author Share Posted March 23, 2010 Turns out to be a split VC joint. Thanks folks for your help. Steve Guaranteed banal profundities Link to comment Share on other sites More sharing options...
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