Jimmyegypt Posted September 28, 2021 Share Posted September 28, 2021 Trying to find the source of a little oil leak! Yes...I know It seems to develop mainly on the right side of the engine. I carried out an oil change and service recently and set the valve gaps. I renewed the cam cover gaskets at the time.. I've checked the torque on the heads and visually the gasket seal seems fine. Head gaskets also seem ok. The leak seems to come from under the tank down into the engine but as I say mainly on the rh side. I'll take the tank off next and check the breather hose etc.If be grateful for any help with the diagnosis Jimmy Sent from my ONEPLUS A6013 using Tapatalk 1 Link to comment Share on other sites More sharing options...
Lucky Phil Posted September 28, 2021 Share Posted September 28, 2021 It's the breather hose from the frame backbone behind the steering head to the back of the engine crankcase at 1200 oclock. Ciao 2 Link to comment Share on other sites More sharing options...
docc Posted September 28, 2021 Share Posted September 28, 2021 +1 on the breather hose. They are nefarious for leaks. Also, visible in every one of your images, is the distributor blanking plate. Seen here just beyond the blue connector for the head temperature sensor: Mine benefited from a fresh O-ring and a smear of sealant. That said, you have so much oil forward of that, it is likely, as Lucky Phil said, to find the breather hose leaking where it attaches to the spine frame at the front . . . 2 Link to comment Share on other sites More sharing options...
Jimmyegypt Posted September 28, 2021 Author Share Posted September 28, 2021 It's the breather hose from the frame backbone behind the steering head to the back of the engine crankcase at 1200 oclock. CiaoThanks for the knowledge. Tank off this weekend Sent from my ONEPLUS A6013 using Tapatalk Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 28, 2021 Share Posted September 28, 2021 To trace a leak I have always completely degreased, puffed the area with white talcum powder and then fired her up. It is immediately obvious where the source is by the dark staining in the powder. Chris. 4 Link to comment Share on other sites More sharing options...
Jimmyegypt Posted September 28, 2021 Author Share Posted September 28, 2021 To trace a leak I have always completely degreased, puffed the area with white talcum powder and then fired her up. It immediately obvious where the source is by the dark staining in the powder. Chris.Thanks Chris Sent from my ONEPLUS A6013 using Tapatalk Link to comment Share on other sites More sharing options...
Jimmyegypt Posted October 3, 2021 Author Share Posted October 3, 2021 This'll be the source of my oil leak then! Perished and cracked breather hose BOTH ends! Gutsibits to the rescue. Thanks for all your help!JimmyegyptSent from my ONEPLUS A6013 using Tapatalk 3 1 Link to comment Share on other sites More sharing options...
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