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+--- Thread: Oil pressure switch (/showthread.php?tid=80372)
Oil pressure switch - Pal - 09-01-19
Twice in the last two days, my oil light has come on, spookily in exactly the same place on my daily commute.
After around a mile, I come to a T junction, and while idling, the light comes on. Revving the engine doesn't kame it go out, and when I pull away and lean left and right it still satys on. Stopping, switching off the ignition and then back on makes it go out, but I'm thinking the switch might be on its' way out.
Bike has 62000 miles and yes the oil is topped up.
Re: Oil pressure switch - darrsi - 09-01-19
How do you check your oil level?
Re: Oil pressure switch - Pal - 09-01-19
Checked with the window, on centre stand on level ground, when cold.
Re: Oil pressure switch - darrsi - 09-01-19
Centre stand, level ground, but you need to start the engine and let it run for about a minute, then switch off and it’ll settle in about 30 seconds, that’s your level.
Sounds like your oil is too low.
Re: Oil pressure switch - darrsi - 09-01-19
The light is just for oil level, it’s not a pressure reading.
Re: Oil pressure switch - Fazerider - 09-01-19
Rather than faffing about running the engine for a specific length of time and then letting it stand for a specific length of time, I prefer to just check it when cold... mine likes it filled to the top of the window, any less than that and it gives the dreaded red light.
Re: Oil pressure switch - darrsi - 09-01-19
(09-01-19, 02:53 PM)Fazerider link Wrote: Rather than faffing about running the engine for a specific length of time and then letting it stand for a specific length of time, I prefer to just check it when cold... mine likes it filled to the top of the window, any less than that and it gives the dreaded red light.
I don’t even have that luxury any more. My window isn’t see through.
2.8 litres in with a new filter does me until the next change.
Re: Oil pressure switch - gerkin - 09-01-19
Light can come on ,on hills if oil is not on highest mark
Re: Oil pressure switch - fazersharp - 09-01-19
I have found the difference between it staying off and coming on is about the same amount as an egg cup. :woot
Re: Oil pressure switch - daviee - 09-01-19
as said its a level light not a pressure light if it comes on top it up slightly with an egg cup full of oil :lol :lol
Re: Oil pressure switch - darrsi - 09-01-19
(09-01-19, 07:10 PM)fazersharp link Wrote: I have found the difference between it staying off and coming on is about the same amount as an egg cup. :woot
Sounds about right :lol
Re: Oil pressure switch - Pal - 10-01-19
At some points in my ownership, the level has fallen so you couldn't see it in the window, no light came on.
This is midway between the two lines and the light comes on, strange.
Didn't come on today, perhaps it was too cold for the light to make an appearance.
Next oil change I'll take the sender out and check it over, until then, a bit of insulating tape should sort out the distracting lamp.
Re: Oil pressure switch - darrsi - 10-01-19
(10-01-19, 02:19 PM)Pal link Wrote: At some points in my ownership, the level has fallen so you couldn't see it in the window, no light came on.
This is midway between the two lines and the light comes on, strange.
Didn't come on today, perhaps it was too cold for the light to make an appearance.
Next oil change I'll take the sender out and check it over, until then, a bit of insulating tape should sort out the distracting lamp.
Midway between the two lines with a cold engine switched off means not enough oil.
Re: Oil pressure switch - Pal - 11-01-19
(10-01-19, 02:24 PM)darrsi link Wrote: Midway between the two lines with a cold engine switched off means not enough oil.Go on then, I'll bite.
Midway between the two lines that Yamaha cast into the casing is not correct?
Has anyone told Yamaha this?
Is there a recall to get replacement recalibrated casings?
Re: Oil pressure switch - darrsi - 11-01-19
(11-01-19, 02:12 PM)Pal link Wrote: [quote author=darrsi link=topic=24849.msg290389#msg290389 date=1547126647]Go on then, I'll bite.
Midway between the two lines with a cold engine switched off means not enough oil.
Midway between the two lines that Yamaha cast into the casing is not correct?
Has anyone told Yamaha this?
Is there a recall to get replacement recalibrated casings?
[/quote]
Read the manual, and it will tell you run the engine before checking the level, as i said earlier.
Re: Oil pressure switch - darrsi - 11-01-19
You asked for help, and i gave you the answer!
Re: Oil pressure switch - fazersharp - 11-01-19
I think the reason is this. If the engine is cold - that means that all the oil that can flow back down has done so. After a short warm up and a couple of mins wait - there is still oil around all the parts that has yet to drip back down into the sump window area. I does seem a bit rubbish to have to read the level via this procedure as it just says a few mins after warm up but the longer you warm it the hotter the oil which will more readily/ quickly drip back down to the window area then the longer you leave it the more oil will drip down so there are too many variables. I would be much better if the procedure was from cold - cutting out all those variables.This would mean that the window would have to be higher as when cold all the oil that will do has dripped down and is near or above the top. I wonder if the read from warm procedure is just because they could not fit a window higher.
Re: Oil pressure switch - Jules-C - 11-01-19
The reason is so you don't need to wait an hour after running the engine to check the oil level.
Re: Oil pressure switch - mtread - 11-01-19
How about this. If it's stone cold the oil level should be at or near the top mark. If it's stopped + a few minutes it should be somewhere between top and bottom marks
Re: Oil pressure switch - darrsi - 11-01-19
(11-01-19, 02:52 PM)Jules-C link Wrote: The reason is so you don't need to wait an hour after running the engine to check the oil level.
That sounds like the most logical reason to me.