- Joined
- Sep 5, 2017
- Messages
- 4
Hi everybody. I have `72 Combat. It has a single carb with a Boyer. It leaks no oil and starts and runs ok{though slightly rich dark brown and sooty on the surround , no sign of oil at all on plugs} Oil return is good and has an Holland anti sumping device. I keep the oil{SAE 50} just above minimum on dipstick. I do have an oil pressure gauge fitted{running of the rocker feed]. When cold at idle its around 40 running up to 50 plus at 4000rpm. When hot it drops right off{unlike my BSA oily frame Lightning which maintains pressure never dropping below 40 to 50 . The feed is taken of the front crankcase . The bike has an SRM conversion with end feed]
The above is really for background as I know pressure gauges and anti wet sumping devices are contentious! The problem is that after a run of 10/15 miles{Commando} there is whitish smoke with slightly more on the right hand side. There is none that I can see on start up. It is not a huge smoke trail and seems worse at tick over and clears slightly with throttle blipping.
If any one has any ideas I would welcome input. Some moons ago I had a MK2a which never had this problem.
Many thanks
The above is really for background as I know pressure gauges and anti wet sumping devices are contentious! The problem is that after a run of 10/15 miles{Commando} there is whitish smoke with slightly more on the right hand side. There is none that I can see on start up. It is not a huge smoke trail and seems worse at tick over and clears slightly with throttle blipping.
If any one has any ideas I would welcome input. Some moons ago I had a MK2a which never had this problem.
Many thanks