I am hoping that someone has some ideas about what is causing the massive oil leak on my 2008 Defender 110 with 2.4 Puma engine.

The engine is pouring oil out of every orifice. There is a lot of pressure in the block. When I take the oil cap off while the engine is running, it is like popping a champagne cork. I assume that the pressure in the block is causing the oil to be forced out of the engine.

My first thought was that the rings have gone and blow by from the pistons is causing the pressure. But, the engine starts right away and seems to have good power. I don't think it would start easily if the rings were bad.

Someone suggested that the pressure could be caused by bad injector seals. That blow by from the injectors could cause the pressure build up. So, I ordered up a set of injector seals and injector clamp bolts and replaced them yesterday. No luck, the oil cap still pops like a cork!

My next thought is to do a compression test to see if it could be rings. This obviously can't hurt. But I am trying to think of what other things could cause the pressure to build up. Is there any way the turbo could cause this?

Thank you for your help!

presumably youve checked the engine breather system

Breather filter clogged up !

Ok - I will take a look at that for sure. I have pulled the breather hose off of where it connects to the air intake hose and it is blowing exhaust out of the hose. I assumed that meant that the breather was not clogged. Am I missing something? I have the Defender down at a friends shop where I am working on it, so frustrated that I can't just go out and look for the clogged breather filter...

Overfilled with engine oil??

These attachments might help.

Thank you for your help and the files from the service manual. So - I did pull the breather hose and it seemed to be fine. I also pulled the valve cover and cleaned up the valve. Nothing seemed to be terribly amiss there either.

The turbo was making a strange sound just before I took the vehicle off the road, so I removed the turbo an took a look at that - seems to all be fine.

I pulled the injectors and found that there was a lot of carbon build up around the injectors and the injector seats. I believe that exhaust gasses were blowing by the injectors and pressurizing the crank case - causing the oil to be pushed out past the seals and gaskets at an alarming rate. I believe that the pressure in the crank case was causing the oil return line from the turbo to build up pressure and not allow the oil to circulate through the turbo.

I cleaned up the injectors and the injector seats. Now everything is back together finally and I am having trouble starting - I believe because the fuel needs to be bled so that the injectors can be feed. Once I figure that bit out - I will post an update on how things are working.

You probably know, but the injectors must go back in their original positions. Each injector is coded and the management system is programmed to recognise each injector. New injectors have to be reprogrammed into the system.
I did a post in this section some time ago on how to bleed the low pressure side of the fuel system, I,ll see if I can find notes on how to bleed the high pressure side and post it up later.

Thank you for the reply. Yes - I have been very careful not to get the injectors mixed up - unless someone came into the shop and shuffled them while I wasn't looking we should be good there.

I saw your post about bleeding the low pressure side and am trying to figure out how I can get that done. I am thinking that a fuel line for an outboard engine with the priming bulb and anti re-flux valve should do the trick. I will go take a look at that later today. Any tips on bleeding the high pressure side would be appreciated.

Does anyone have experience using the Land Rover special tool for bleeding the fuel system? Is it worth the price? I am going to have to replace the fuel filter soon also - so might come in handy. Just hard to get it sent here to Grenada.