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Added some anyways. Even after an oil change I've noticed it would stay on longer then it should (1-2) seconds and I have the hose clamp on.It never come on while riding or that I've seen.
Calvin, I was sitting on a slope where I normally park bike, it sat for two days. But when I started it I got a 2-3 second oil light on what's an abnormal amount of time before I worry. Got bike on relatively flat ground and measured with the crappy plastic dipstick, did not notice any oil but after a bit it finally measure on the very bottom of stick.
Informative posts, Patrick.
BTW, the reason that your oil light has a delay is that your LOW level is below the displacement gears of the pump. The pump now has to suck oil up from the sump before it can be pressure injected into the engine. The closer that the oil level is to 'normal', the easier and faster it is for the pump to suck the oil into its gears. A displacement pump is a lot more efficient at pushing oil and than it is at sucking it up from the sump.Patrick HayesFremont CA
I'd disagree with that. The oil level is pretty much irrelevant. It has to be pushed into the pump, (There is no such thing as 'Suck' although it's a convenient way of describing the action.) by the pressure in the crankcase forcing the oil into the low pressure areas created by the separating teeth in the pump. The height of the oil in the sump is going to have a negligible effect on the time taken for that to occur.With any bike that has the 'Upside down' filter in the sump there is the problem that even if the filter is pre-filled it will tend to empty again before the engine is started. Even if the pump is working to the best of its ability it first has to prime the pump, then it has to fill the filter and the oil galleries, bearings etc. before the oil reaches the wretched sender switch on the top of the block. That always takes time. Hence the delay in the light going out. If you just change the oil the priming period tends to be much shorter due to the filter already being full of oil and the drain-back being limited.It's not really terrifically important though. As long as the light goes out in a few seconds that's all you need to know!Pete
Atmospheric plus whatever extra from blow-by and crankcase volume differential. There is no such thing as 'Suck'. The pump creates a low pressure area, a depression, and the oil gets pushed into it from an area of higher pressure.When there is a hurricane forming in the gulf the meteorologists don't say "There is a large tropical suck forming in the Gulf of Mexico." do they?Pete
I've had issues with oil pressure switches, rode int he rain, it stopped working. Then would randomly come on, unnerving! So I replaced it.Then washed the bike the next day... Needed ANOTHER new one... This one I coated in RTV around the top, been fine ever since
This one I coated in RTV around the top, been fine ever since
When there is a hurricane forming in the gulf the meteorologists don't say "There is a large tropical suck forming in the Gulf of Mexico." do they?Pete
I have 4 Guzzis, every now and then an oil light will come on.I think the switches are effected by riding in the rain, the light will come on while wet then go out for good.
...filled with enough oil and lucas to register on dipstick.
Not exactly clear what that statement means. Just barely on the bottom? At the two quart level? At the three quart level. You have already described being so low as to barely or not register on the stick previously. You were at serious risk of permanent motor destruction. In 10 minutes you can correct this problem and get some peace of mind.1-drain the oil into a clean pan.2-use a funnel and a clean bottle or container of one-quart capacity.3-Re-install your used oil to a precise capacity of three quarts.4-If you can't fill the measuring bottle three times, then add whatever new oil gets you to fill the third bottle.5-You now know EXACTLY where the nominal three quart level should register.Nothing to lose but a few rags and cleanup time.Find a better way to measure your oil level than the use of the stupid original black stick.Patrick HayesFremont CA