softmick

Finally found the (second )route of the problem! The head gasket had gone which had forced exhaust into the oil system which caused the initial pressurised oil problem forcing oil through into the exhaust. Head gasket replaced and the oil still pressurised but I noticed no exhaust with filler cap off. Planned on all the options from new turbo to valve seals, new hed etc and it turned out the hot exhaust gasses had cooked the cyclone! £5 for a second had cyclone from my local indy and problem solved! Can of turbo cleaner for good measure and better than new, no oil or coolant loss and most importantly, no smoke!

Thanks for the replies and as suggested took the head to be checked over and luckily (possibly) no problems found! Head gasket replaced, head back on and tightened to sequence, valve clearances checked and engine started. Everything seemed to run fine until I checked the engine over. Luckily I had not put the hoses back on and the turbo outlet (to intercooler) was pouring with oil. Took the intercooler off and this too had a large amount of oil in. Could this be the turbo seals pushing oil into the intake?

Hi and thanks for the replies. Sorry for not coming back sooner, decided to take the head off to have a proper look. As suggested the valve guide on two of the valves has noticeable wear so I think it will have to go for new ones! This might be a stupid question but where would I take it? A garage or is it a specialist thing? Thanks

Hi all, I hope someone can help! 1997 Discovery 300tdi 89000 miles. Came off the motorway yesterday and stood at the lights the discovery started smoking. Only a little at first but did get a lot worse. Managed to get home and it had used a little oil, from full on the dipstick to around half way. Checked all hoses and no blockages or breakages. Smokes at idle and under load. Checked exhaust and oil residue in there that wasn't there before. Cleaned the cyclone breather too and put back together and still smokes. With the engine running could hear air coming from the cyclone breather so thought there must be excessive pressure and removed the oil filler cap to check. When you remove the oil filler cap there is a lot of pressure escaping but the smoking stops. Had to pick the BH up from the hospital so taped a bag over the oil filler gap hole to catch any oil and it ran fine with no smoke at all. New head gasket around 8 months ago and no coolant loss whatsoever. What would be the next thing to check? Could it be valve oil seals or something more serious? Thanks in advance!

Sorry for the thread resurrection! I have the same issue on mine and wondered how easy a job it is to replace the o-ring. Is it simply mark position of rod, unscrew, replace o-ring and screw back in to marked position?? Can't really tell from the image and don't want to unscrew the pin and the internals change and the pin won't go back in!! Thanks in advance!