hi there .I have a prob with me showy ,I have oil in my intercooler pipes ,i have had a recon turbo ,top breather pipe on crank cover seems to be a lot of oil round it ,I have also reconned the top of the engine which was the main prob of a oil leak i had originally,I have had the pressure checked on pistons etc and seems to be ok,The part that concerns me is the top breather when revved hard oil does come from breather and into air filter flow pipe,Cant think what else it could be any help is appreciated

thanks

Well since yu say yu cave a recon turbo , well delete the turbo itself burning the oil. One issue that will cause this , we had covered a section here about it. Blow By , and Diesels can be affected by this also. If the cylinder walls or wall of one cylinder has high wear most of the compressed cylinder air will flow into the crankcase causing higher pressure and oil in higher than normal amounts into the crankcase ventilation system.

Also Failing piston rings will also cause this same issue. It can be also juss one piston doing it also, the rings can not be totally bad but causing compression bypass. Also a failing piston. Also sum models 4D and 4M's preferably 1995 and 1996 starting had an oil catch system for the crankcase ventilation system , when the reverse flow drain plugged , or malfunctioned it did not drain or drain the oil to the bottom of the engine , resulting in oil being blown into the cleaner/ air ventilation system of the intake

Hi Kit teung thanks for the reply the car is driving really sweet with no starting problems at all ,I have had a compression test done and everything is ok,As for the oil catch sysyem is there anyway this can be tested I sure it is only something simple or have missed because like i say the car is driving sweet and really quick compared to what it was.Thanks

Also yu may want to check yur oil drain backs on the cylinder head. Also on the cam cover , lots of times the oil splash gaurd that is at the upper part of the cam/rocker cover that blocks the ventilation port of the secondary crankcase ventilation. The oil run off sections could be corroded and blocked , leaving lots of oil on the upper section of the ventilation splash shield. Ive seen this a few times.

having to remove the cam/rocker cover and twice soaking it , and other times take it to like , a car wash (LoL) or high pressure system to clean out the inner side of it to remove the lodged and baked up old oil deposits that are trapping oil on the upper splash shield. Ive seen this on many petrol engins as the 6G72 and 6G74 (3.0,3.5) In Pajero's and Tritons etc and also 4M4 and a few 4D Diesel engined vehicles also