Di-D engine leaks diesel into sump

[4eP]

I bought a Di-D engine out of a 2003 SWB which was in a crash.

It had only 12000 kms on it when I bought it.

It soon became clear that something is wrong, because diesel finds it's way into the sump. (Dip stick level rises ?20mm after a 800k trip!)

I had the main shaft seal on the injector pump replaced after the mechanic blamed it for the problem.

It obviouly is not the problem.

Any experience / ideas?

[marquis]

Obvious things would be incorrect fuel injector timing, damaged/stuffed fuel injector(s) or rubbish got into the injector pump. Wonder if the pump was removed and re-installed or another put in??
(ie injecting fuel in the wrong part of the cycle)

[4eP]

Obvious things would be incorrect fuel injector timing, damaged/stuffed fuel injector(s) or rubbish got into the injector pump. Wonder if the pump was removed and re-installed or another put in??
(ie injecting fuel in the wrong part of the cycle)

The engine runs 100%

Incorrect injector timing or damaged / dirty injector would have shown up in smoke / bad running.

The pump was removed to replace the seal.

[marquis]

The engine runs 100%

Incorrect injector timing or damaged / dirty injector would have shown up in smoke / bad running.

The pump was removed to replace the seal.

There are three main things that allow diesel into the sump:
1) Fuel Pump seal leak (according to you it's been replaced)
2) Injection problem (injector or pump issue)
3) No load / large idle times (ie hours at a time - but it happen when driving 800km according to you)

If rubbish got into the pump - for example fuel may be entering the cylinder that is not being burnt/going therefore entering the sump.

If you had very bad rings - I think you would know...

[4eP]

There are three main things that allow diesel into the sump:
1) Fuel Pump seal leak (according to you it's been replaced)

Yes

2) Injection problem (injector or pump issue)
3) No load / large idle times (ie hours at a time - but it happen when driving 800km according to you)

Both would inject diesel into the cylinder, not the sump, and would be noticeable by smoke and bad running

If rubbish got into the pump - for example fuel may be entering the cylinder that is not being burnt/going therefore entering the sump.

?

AFAIK the only places the diesel can get into the internals and find it's way into the sump (without evidence of bad running) are:
* Injector pump main shaft seal
* injector plumbing (leak)
* injector body (leak)
*leak-off plumbing (leak)

I was hoping that somebody had experienced this problem, and point me in the right direction.

Thanks for your ideas IAC.

[marquis]

4eP,

I suggest you talk to a diesel specialist.

Diesel enters the sump via cylinder - trust me on this...

I have seen many oil changes on diesel engines because of this reason.
If oil contains more than 5% diesel it should be automatically changed.

Why do you think the Gen4 DiD Auto DPF force regen requires an oil change directly after????

[adrian9779]

it is quit normal for the oil level on a new pajero di-d to increase over a period of time,because it does aoto burns while your driving to keep the dpf filter clean which is situated in the exhaust.if you are using poor quality fuel ie safeway it will do this more often.there is a download to help this problem.on the mut 3 their is a fuel pressure actuater test to check for any internal fuel leaks because once the rocker cover is on you cant see anything.important note -all did engines with autos have to run low ash oil otherwise dpf will block and a forced burn may not fix -this is not covered by warrenty & are big bucks.