110_USA Posted January 12, 2009 Share Posted January 12, 2009 The oil filler cap on the rocker cover has popped out twice, not completely; but as much as the bonnet will allow, and produces a spray of oil. I think it happens when I'm down shifting but that doesn't seem to make much sense. First time happened about two months ago and the second time was this morning. Am I perhaps looking at too much blow by and a piston ring job? Cheers Quote Link to comment Share on other sites More sharing options...
Lars L Posted January 12, 2009 Share Posted January 12, 2009 2,5NAD, right? There is a gasket in the form of a rubber sleeve on the cap. If that's to worn, this can happen. I have one spare... Quote Link to comment Share on other sites More sharing options...
Baldewin Posted January 12, 2009 Share Posted January 12, 2009 2,5NAD, right? There is a gasket in the form of a rubber sleeve on the cap. If that's to worn, this can happen.I have one spare... If it is 2.5nad just remove the ribbed rubber gasket, wipe the cap clean, wrap with a few layers of electrical tape, reinstall the gasket and you should have a snug fit. It worked for me. Chis Quote Link to comment Share on other sites More sharing options...
Prith Posted January 12, 2009 Share Posted January 12, 2009 2,5NAD, right? There is a gasket in the form of a rubber sleeve on the cap. If that's to worn, this can happen.I have one spare... Mines a 2.5NAD too and have the same problem, must get a new cap as well as a new gasket. Why could LR not design a threaded type like all other cars???????? Quote Link to comment Share on other sites More sharing options...
Les Henson Posted January 12, 2009 Share Posted January 12, 2009 Sweden to Georgia, now that would be an impressive forum relay Les. Quote Link to comment Share on other sites More sharing options...
110_USA Posted January 12, 2009 Author Share Posted January 12, 2009 Sorry, I should have mentioned, the cap is new and fits snug (although it is a Britpart) I had to replace it because the original was bent and leaked constantly. I guess I could just take a door stopper and stick it on top of the cap to fix it, but what might be the cause if it is fitted correctly? It is a 2.5 N/A, and thanks Lars but I've got a extra too as that was my first try at fixing the original. Quote Link to comment Share on other sites More sharing options...
western Posted January 12, 2009 Share Posted January 12, 2009 try bending in the tube the cap fits in to make it a tighter fit. Quote Link to comment Share on other sites More sharing options...
Lars L Posted January 12, 2009 Share Posted January 12, 2009 The cap fits in the cast ali rocker cover... Quote Link to comment Share on other sites More sharing options...
reb78 Posted January 12, 2009 Share Posted January 12, 2009 My TD did it as it was coming toward the end of its time. I think it was really high crank case pressure pushing it off. I suppose it could be a similar problem in yours even though it shouldn't suffer as much as the TD. Quote Link to comment Share on other sites More sharing options...
tychoS Posted January 13, 2009 Share Posted January 13, 2009 2,5NAD, right? There is a gasket in the form of a rubber sleeve on the cap. If that's to worn, this can happen.I have one spare... The ribbed rubberband has a part number by itself ERR736 (both n/a and td) and is a part of the head gasket set as well. I changed the ribbed rubberband on my TD. The difference between old and new was huge. With the new one I have to use force to get the cap off, with the old one only the bonnet held it on ;-) Of course blow-back is always a fair bet with a worn n/a or td. Quote Link to comment Share on other sites More sharing options...
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