Funny smell...

Hi,

My 02 reg TD4 has a funny smell around it only when running, smells slightly oily. Does it right from start, so it isn't oil burning off anything hot.

I first thought a split turbo/intercooler hose, but have replaced all the rubber hoses on the air inlet system, flushed and checked the intercooler for leaks and had a good look around for problems, but cant find anything.
I have also had the inlet manifold off and cleaned/replaced the 8 rubber seals.
The EGR has been removed and replaced with a straight through pipe, but it still smells.

I've followed all the pipes and used a torch trying to see a leak and there are no oily / soot patches anywhere that would signify a leak.

IRD vent is dry, no leaks there.

Anyone got any ideas on where else this could be coming from?

is it smoking when you start it (blue) and have you had a smell in the header tank ?

Is it a hot acrid smell? Could be that you have a leaky injector seal. Take a look at the top of the injectors, to see if there are any black/sooty deposits around the injectors.

Good luck

are you using oil at all

not using oil or any sign of smoke either on start or run.
Changed the antifreeze a few months back, dodnt notice smell or anything in the water when I drained it. The smell was present before then; did the antifreeeze at the same time i did the intercooler flush.

Cant see anything around the injectors either, i assume you mean around the body where it goes into the head rather than on the injectors themselves?
I did a leakback test and very little came out. when i disconnect each injector in turn when its running, they all make idle rough - would a leaky injector seal reduce compression and mean the idle on a leaky cylinder wouldnt be as affected by disconnecting the injector?

Is the under tray dry?

is it down on power at all or more fuel consuption?
i would start the engine and take the dip stick out and look and feel for smoke blowing out or a strong smell of burning oil plus do the same with the filler cap you could have a blocked breather or maybe at a push a piston ring gone.

Could it be the Fuel Burning Heater running all the time ? Not got one myself so just guessing.