Haro274

New Member
Today started up the Defender and heard a bit of a clunk, oil light stayed solid, turned it off.
I found a small piece of black plastic on the dipstick.
Any thoughts, Do I have big problems!
 
If you turned it off straightaway you might be ok
If zero oil pressure could be the oil pump bolt, a known failure point. Might be worth whipping the sump off and having a look
 
The dipstick does have a black plastic tip on the very end of it. Early TD5's had a reputation for oil pump bolt unscrewing and causing engine failure, there was a mod that was carried out to stop this on later models and modified bolt available for DIY use, (thread lock on threads).
Link to Disco TD5 bolt replacement to show it. (Half way through video)
 
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The dipstick does have a black plastic tip on the very end of it. Early TD5's had a reputation for oil pump bolt unscrewing and causing engine failure, there was a mod that was carried out to stop this on later models and modified bolt available for DIY use, (thread lock on threads).
Link to Disco TD5 bolt replacement to show it. (Half way through video)

Thanks For the reply, I have read a lot about this bolt issue, however I was wondering if there could be something else that would cause fragments of plastic to be in the sump
 
Thanks For the reply, I have read a lot about this bolt issue, however I was wondering if there could be something else that would cause fragments of plastic to be in the sump

I'm guessing plastic fragments would be the timing chain guides. Enough pieces sucked/attached to the mesh on the oil pickup would cause the oil pump to lose suction. Its all guessing at this stage until you tear into the engine for an assessment. As suggested, start by removing the sump. All the best with it.
 
Today started up the Defender and heard a bit of a clunk, oil light stayed solid, turned it off.
I found a small piece of black plastic on the dipstick.
Any thoughts, Do I have big problems!

As long as you tuned it off immediately you'll probably be fine. A lot of engines have no oil pressure on start up until the oil pump kicks in so a quick on and off should be fine.
 
Just an update.
We dropped the oil pan to see, the oil pump bolt and a broken chain lying in the sump.
Not sure what i am going to do, at this stage I think we will source a second hand 16P engine.
 

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