GuzzBun Posted May 16, 2005 Share Posted May 16, 2005 Riding home this evening, the Scura developed a strange noise under hard acceleration, similar to pinking but definitely not pinking - it was a sort of high pitched whistling or screeching. Pulled over and blipped the throttle - no noise (presumably 'cos it wasn't under load) BUT - clouds of blue oil smoke from both pipes AND clouds of blue smoke from under the engine (or that's where it seemed to be coming from) - no other signs of oil - no apparent leaks, and whilst riding no apparent degrade in performance. Admission - I did 'yellow line' her on one occasion this evening - 120 indicated - but I didn't 'red line'! Any ideas??? Robin Link to comment Share on other sites More sharing options...
Guest Nogbad Posted May 16, 2005 Share Posted May 16, 2005 Lets start by being optimistic. Is there any chance you could have overfilled the sump? Link to comment Share on other sites More sharing options...
big J Posted May 16, 2005 Share Posted May 16, 2005 Did it use much oil? How's the clutch?Did you run over any parrots whilst yellow lining?[sorry]Is it definately burning oil or is it coming from a breather or similar and leaking onto the exhaust? Link to comment Share on other sites More sharing options...
big J Posted May 16, 2005 Share Posted May 16, 2005 BTW, I "yellow lined" mine coming home from Scotland last night between Dundalk and Drogheda (about 25 miles), washed the old girl off tonight and the rear tyre valve came off in the sponge.Laugh? I nearly shat Link to comment Share on other sites More sharing options...
Martin Barrett Posted May 16, 2005 Share Posted May 16, 2005 Thats why I rarely wash mine Link to comment Share on other sites More sharing options...
Guest Nogbad Posted May 16, 2005 Share Posted May 16, 2005 BTW, I "yellow lined" mine coming home from Scotland last night between Dundalk and Drogheda (about 25 miles), washed the old girl off tonight and the rear tyre valve came off in the sponge.Laugh? I nearly shat 51891[/snapback] Better born lucky. You really would have shat if it had come off earlier. You don't by any chance have those pressure indicating caps do you? There are reports of valve fractures due to their weight over the standard cap. I assume you haven't fitted fancy lighting up "tirefly" caps as used by chavs in Vauxhall Novas..... Link to comment Share on other sites More sharing options...
GuzzBun Posted May 16, 2005 Author Share Posted May 16, 2005 Lets start by being optimistic. Is there any chance you could have overfilled the sump? 51883[/snapback] I haven't topped the oil recently - yesterday I did 125 miles around the Peak District - no problems. The only significant event in the past 500 miles was the 'yellow lining' this evening. Haven't checked the oil level, but will do tomorow. Link to comment Share on other sites More sharing options...
Guest Nogbad Posted May 16, 2005 Share Posted May 16, 2005 I haven't topped the oil recently - yesterday I did 125 miles around the Peak District - no problems. The only significant event in the past 500 miles was the 'yellow lining' this evening. Haven't checked the oil level, but will do tomorow. 51897[/snapback] If the smoke cleared and the engine was normal after the incident I would suspect a simple case of excess oil being forced from the breather, or perhaps a blocked breather which can cause oil to be forced down the valve guides or past the rings if the crankcase pressure became very high. I don't know how the later breathers work, but no doubt someone will. Link to comment Share on other sites More sharing options...
DeBenGuzzi Posted May 16, 2005 Share Posted May 16, 2005 Great no more going for the redline, no more wheelies Man I can't have any fun on this bike now I might break something. oh well I'll try not to think about it for now. Link to comment Share on other sites More sharing options...
GuzzBun Posted May 16, 2005 Author Share Posted May 16, 2005 Did it use much oil? How's the clutch?Did you run over any parrots whilst yellow lining?[sorry]Is it definately burning oil or is it coming from a breather or similar and leaking onto the exhaust? 51885[/snapback] Clutch is fine - no slipping. No parrot remains visible either! Oil smoke is definitely coming out of both exhausts - is there a breather that routes into the collector box? Robin Link to comment Share on other sites More sharing options...
richard100t Posted May 16, 2005 Share Posted May 16, 2005 When I get mine fixed there will be no more riding it hard in any way (thats what I say now lol). Seriously I love the bike but I need another bike for horseplay. Link to comment Share on other sites More sharing options...
Guest Nogbad Posted May 16, 2005 Share Posted May 16, 2005 Clutch is fine - no slipping. No parrot remains visible either! Oil smoke is definitely coming out of both exhausts - is there a breather that routes into the collector box? Robin 51905[/snapback] If the oil smoke is coming from both exhausts and continues to do so then you may have a more serious problem. Take the plugs out and check for oil, and test the compression. Run the engine with the dipstick out and see if you have high crankcase pressure. Link to comment Share on other sites More sharing options...
al_roethlisberger Posted May 16, 2005 Share Posted May 16, 2005 I was going to say check the banjo fittings for the oil recovery system, and the breather hose from the block to the frame, as these are both well known eventual leaks.... but they would just get oil ON the engine/exhaust and make a hell of a stench and smoke burning off the hot bits.... not come out of the pipes. I would still look to see if your breather hose has deteriorated and cracked, as that is a common thing after a few years of heat, and that does make a mess. al Link to comment Share on other sites More sharing options...
big J Posted May 16, 2005 Share Posted May 16, 2005 Better born lucky. You really would have shat if it had come off earlier. You don't by any chance have those pressure indicating caps do you? There are reports of valve fractures due to their weight over the standard cap. I assume you haven't fitted fancy lighting up "tirefly" caps as used by chavs in Vauxhall Novas..... 51896[/snapback] Nope, standard valves, made from hard cheese by the look of it. Link to comment Share on other sites More sharing options...
Guest Nogbad Posted May 16, 2005 Share Posted May 16, 2005 Nope, standard valves, made from hard cheese by the look of it. 51913[/snapback] Must make sure they change the valve with my tyre when its ready for a new one.... Link to comment Share on other sites More sharing options...
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