Where is this coming from?!

[Darren61]

Hi all,

I have an oil leak. The oil collects between the sump and what I think is the gearbox, with it gathering slowly and then dripping off the PMS gear selector arm underneath onto the ground.

I’ve recently had the sump gasket replaced which hadn’t solved the problem. Has anyone got any ideas about where the leak is actually coming from, is it the gearbox or the engine?

Any help would be gratefully received ??

 

[Darren61]

@NorthloopCup
@bloke

 

[bozothenutter]

crank seal i'd say from the location.
only place it could come from.

 

[Darren61]

crank seal i'd say from the location.
only place it could come from.

Thanks, I’m guessing that’s a significant job in terms of labour?

 

[NorthloopCup]

It could be the rear main oil seal, but it could also be the rear main cap as well. Both are a big job to do, with the latter being the biggest of the 2.

 

[JamesBryan]

Yeah I'd say crank seal too.

Box, clutch and flywheel off job.

 

[bloke]

is it engine oil or gearbox oil?

 

[Darren61]

is it engine oil or gearbox oil?

Engine I believe...

 

[Brucefil]

Crank seal likely candidate. Renault have a strange way of installing the real main seal where the seal sits about 3mm proud of the block wheras on most other cars they sit flush so most mechanics will not get that one right.

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[Robbie Corbett]

Are you sure its totally dry up top? Oil leaks can be a right pain to find as a small leak up top can travel down the various cracks and splits (say between block and gearbox) making them appear to come from much further down.

Mine is very oily at the moment, just found that my PAS pressure switch is leaking and has made a bit of a mess - wonder if you have something similar?

 

[Robbie Corbett]

PS - how an earth is your shifter mech not coated in gearbox oil, thought that was a standard Clio feature?

 

[Brucefil]

Have you done any work to your crank? Could be the end cap as well. I would also check your crank case breather as If it's not breathing properly it had a tendency to want to push oil out the back of the motor

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