Thread: Another sump gasket already

Id start thinking down the line of maybe your sump is warped.
Maybe from a previous job with the wrong torque sequence
Have you tried nipping the bolts up in sequence of course when it has started to leak,

Will try nipping them up again, but not usually successful once oil gets between gaskets in my experience. Sump is not warped and deck was clean and flat. Seems to be a common issue with the td5 sump leaking at the rear. What irks me is it did not leak a drop for 2400kms. Seems to be the back drivers side corner that lets go on these all the time.

Originally Posted by rangieman

Id start thinking down the line of maybe your sump is warped.
Maybe from a previous job with the wrong torque sequence
Have you tried nipping the bolts up in sequence of course when it has started to leak,

Originally Posted by CraigE

Will try nipping them up again, but not usually successful once oil gets between gaskets in my experience. Sump is not warped and deck was clean and flat. Seems to be a common issue with the td5 sump leaking at the rear. What irks me is it did not leak a drop for 2400kms. Seems to be the back drivers side corner that lets go on these all the time.

Funny how you say a common issue as i in my opinion i think who fitted the gasket the issue not blaming you
I have done a few Td5 sump gaskets and when taken the time and done right have never had one leak .
Thats why i say the sump could be the issue not blaming you

One of the most useful tricks I developed with sump gaskets is to only finger tight the bolts at assembly, then after 24 hours when the sealant has hardened do the bolts up to spec. Fast assembly and immediate use does tend to lead to a rapid return of leaks. Unfortunately the vehicle is off the road for an extra day but that's the price you pay. Oh and I now use Ultra Grey silicone, good stuff.

That surprises me nearly everyone I have seen both Defender and Disco has a slight leak if not a bad one. I find it very rare not to see a TD5 without oil spots under neath it.
I mean fitting a gasket is not rocket science and have never had any issue with any other car or gasket. The gasket slotted in fine. Checked and triple checked was seated fine. Next time out will give the sump a better inspection to check if square. Could not see any damage visually.
I know issue were also raised over the washer at the back d/s being slightly thicker, but not sure looking at it, but exactly where the last 2 leaks have been. Also if not a known issue why do LR recommend sealant on this section only? To me that shows an inherent fault. I sort of agree they dont leak initially, but seem to eventually.
May try the 24hr trick next time. What I initially intended doing but it started to **** down and was looking heavy, plus got a call to work next morning.
At the moment it is just a drip but annoys me just the same.

Originally Posted by rangieman

Funny how you say a common issue as i in my opinion i think who fitted the gasket the issue not blaming you
I have done a few Td5 sump gaskets and when taken the time and done right have never had one leak .
Thats why i say the sump could be the issue not blaming you

When I had my 300 TDI done years ago the service manager had the sump glued on and it had to stand overnight before driving to ensure proper bonding. No problem

Never had any issues with tdi or v8s. next time I think I will let stand for 24 hrs before tightening and filling with oil.
Cheers
Craig

Originally Posted by jx2mad

When I had my 300 TDI done years ago the service manager had the sump glued on and it had to stand overnight before driving to ensure proper bonding. No problem

Had a good look at this again yesterday.
Definitely leaking from Rear RH (Drivers side) so may be something in what others have posted re thicker washer and a common place to leak.
However what I did find that did alarm me a little was 2 of the bolts positions 2/3 I think were not at tension, have re torqued and will see how they go. Thread seems to be OK on bolt and housing.
Will run a thread tool when I have off next.
Will also use high strength loctite on the bolts instead of medium.
Maybe time to look for a new set of bolts as well as they seem to have a couple that the standard 10mm does not fit anymore tightly.
Cheers
Craig