fuel in engine oil

gregdiscovery · Jul 11, 2011

hi i have a 300td discovery, i have done a oilspy test on the engine oil and its got some diesel in the engine oil. has anyone ever had this on theres before ? and also what could be causing it ?
thanks

jamesmartin · Jul 11, 2011

poorly injector but would get some smoke,very poorly lift pump

gregdiscovery · Jul 11, 2011

hi thanks for the reply. the lift pump is less than a year old. it is a bit smokey not blue smoke more dark grey/ black like a bit of un burnt fuel

jamesmartin · Jul 11, 2011

less than a year old or 5minuets old doesnt matter when diagnosing faults ,but if was lift pump some would leak out of hole on underside of pump,

gregdiscovery · Jul 11, 2011

no the lift pump doesnt leak.
thanks

hifly · Jul 11, 2011

i would do a compression test as it may be getting past the rings.

jamesmartin · Jul 11, 2011

not a compression test needed injector test ,leaking injector can burn piston out

biolandy · Jul 11, 2011

gregdiscovery said:
no the lift pump doesnt leak.
thanks

When my brit part lift pump gave in after a whole 4 weeks,it was leaking fuel into camshaft area,with nothing visible on the outside of the engine-if you have a britpart fitted ,I would check it very carefully-the delphi one has the screw on top with a gauze underneath

shocker · Jul 11, 2011

I second that emotion,britprt with moving parts cannot be trusted

gregdiscovery · Jul 11, 2011

hi thanks for the replies i will have a look at the lift pump and do a vacum test on it in the morning. thanks for all the replies so far

gregdiscovery · Jul 12, 2011

hello all just a quick update, i have vacuum tested the pump today and its not holding vacuum so i have ordered a new pump.
thanks to everyone who answered my post

biolandy · Jul 12, 2011

Hope you ordered a Delphi pump-bit dearer but well worth it

gregdiscovery · Jul 13, 2011

hello all got the new pump on today ( a delphi one ) and i have flushed the engine with some flushing oil to rid of the fuel in there and then changed the oil filter and refilled with some nice new oil. she sounds sweet now and alot less rattly.
many thanks again for steering me in the right direction with this fault

fuel in engine oil

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