Garry Posted May 2, 2007 Share Posted May 2, 2007 Hi, I've got an XJR1300 SP. Recently started to get oil running from one of the overflow pipes. Traced the pipe up to the air box. I cant think why so much oil is gathering there. The Haynes manual gives no clues. Anyone got any info on where the oil is coming from and what I need to do to remedy the fault? Link to comment Share on other sites More sharing options...
markyr6 Posted May 2, 2007 Share Posted May 2, 2007 Hi, I've got an XJR1300 SP. Recently started to get oil running from one of the overflow pipes. Traced the pipe up to the air box. I cant think why so much oil is gathering there. The Haynes manual gives no clues. Anyone got any info on where the oil is coming from and what I need to do to remedy the fault? Link to comment Share on other sites More sharing options...
markyr6 Posted May 2, 2007 Share Posted May 2, 2007 have you checked oil level in window? do you do lots of short runs could be emulsifing when engine breaths then parked on side stand it runs out? Link to comment Share on other sites More sharing options...
Garry Posted May 3, 2007 Author Share Posted May 3, 2007 Appears to be no sign of moisture ingress. I had a word with yam mechanic. he says that the crankcase breathes through the airbox. I'm going to do a copression test, as he says it may be the rings going. For information, he says it is more normal to happen when over filling with oil... the excess just gets blown up into the airbox. But this not the case here. i hope its just the rings, and not the valve guides. I'm off to the TT Races on it in 4 weeks so I need it on the road by then Link to comment Share on other sites More sharing options...
FJ12SP Posted May 6, 2007 Share Posted May 6, 2007 Got a similar problem with my FJ1200, I have exhaust and oil coming from my crankcase breather. I did a compresion test and found that the Rings on pot 1 were U/S. Have at the moment got the barrels off getting honed and a new piston Kit. I do not run an airbox (S&B indi filters) so I have a crankcase Filter (Instead of running up into airbox) but the XJR lump is the same as the FJ. What you are experiancing is crank case pressure (Not oil pressure) this is probably caused by broken or sticking piston rings. Hope this helps Adam. Link to comment Share on other sites More sharing options...
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