Changed my oil last nite, and, for the first time, removed what I thought was the cover for the
Oil Screen (behind the oil temp sensor).
Used a 21mm socket, came off pretty as a picture.
No screen seen by me.
Peered in the little hole there and can see clear thru to the far side of the case.
Is this Bad? A known Variant? I did not see an obvious attachment point for a screen.
I generally see no more than the usual grime stuck to the plug magnet, you know, valuable pieces of engine innards. maybe the occasion flake. Nothing big enough for most screens methinks
I was all pumped to use the manly 17mm allen that yuu graciously sent me, what the hell?
Well if it makes you feel better - I've never found anything on my screen so far.
But, it should be there. Seems like it was pulled at some point and never put back for whatever reason.
There's no real attachment point, basically it's a cylindrical plastic gizzy with a bit of a shoulder at one end. YOu just stick it in the hole, and chance it with the cap to hold it in place.
are you sure? it is up inside. you remove the oil temp plug + cover and you stick a male hex (14? 21?) inside..
Quote from: ducatiz on July 27, 2010, 06:46:40 AM
are you sure? it is up inside. you remove the oil temp plug + cover and you stick a male hex (14? 21?) inside..
17mm - I sent it to him. And if it was there, it's obvious. HE wouldn't be able to see inside the case....
ime if the screen is missing you won't have oil pressure, the oil warning light will come on, this is very strange.
Pix or shens! ;D
This is odd...
Ok devimau has thrown down the gauntlet
I'll revisit in 3K miles (or less if my motor grenades) with a close(r) examination and, yes,
some pics!
btw my No Oil Pressure light does illuminate with ignition on and engine off (took a LONG couple seconds to go Out after restarting follwing OC).
Appreciate the replies
Quote from: devimau on July 27, 2010, 11:05:30 AM
ime if the screen is missing you won't have oil pressure, the oil warning light will come on, this is very strange.
I don't think so.
The oil would still flow to the pump, just not strained.
It isn't like a car where the oil is picked up by a screen and tube.
Quote from: seevtsaab on July 28, 2010, 07:20:53 AM
Ok devimau has thrown down the gauntlet
I'll revisit in 3K miles (or less if my motor grenades) with a close(r) examination and, yes,
some pics!
btw my No Oil Pressure light does illuminate with ignition on and engine off (took a LONG couple seconds to go Out after restarting follwing OC).
Appreciate the replies
Well, the no pressure light will always come on when the electrics are powered up - but the engine isn't running. Without the engine running the pump isn't going... so there's no pressure.
Regarding the delay - did you prefill your oil filter? If not... that's probably why. And if you didn't I'd recheck the levels as you might find you're low now.
I would source a screen from some where. The screen stops the big pieces (like broken valve retainer rings) before they get to the oil pump and destroy it. Or block an oil passage and grenade your engine.
ok, remobe the cvr and take the screen off, the put the cvr back without the screen and then start the engine.
then post the results ;)
Quote from: ducpainter on July 28, 2010, 07:37:27 AM
I don't think so.
The oil would still flow to the pump, just not strained.
It isn't like a car where the oil is picked up by a screen and tube.
Quote from: devimau on July 28, 2010, 11:56:52 AM
ok, remobe the cvr and take the screen off, the put the cvr back without the screen and then start the engine.
then post the results ;)
Since the oil screen is in the path of an oil galley (no notable effect on flow, and, as Nate said, not submersed in the sump I don't see how. I'm not saying you are wrong, but could you explain why this would happen?
to be honest with you I never gave it a big thought to it but the first time happened a few years back with a 748 senna, no oil pressure with the light on......after messing around with the pump and having .7 bars of pressure @ the mathesis I removed the screen and it was loose......I tighten it and wala pressure came back.
second time happened 3 months ago with a 998, customer bought it salvage and had no oil pressure (light on), he replaced the oil pump and was still the same and he brought it to me, I went straight to the screen and.....wala.....loose screen....tighten it back up and problem solved.
I can go and check all the drawings for the oil circuit but...for what???? I already experienced it twice to know it and that is good enough for me.
Quote from: howie on July 28, 2010, 06:11:28 PM
Since the oil screen is in the path of an oil galley (no notable effect on flow, and, as Nate said, not submersed in the sump I don't see how. I'm not saying you are wrong, but could you explain why this would happen?
Quote from: devimau on July 28, 2010, 11:56:52 AM
ok, remobe the cvr and take the screen off, the put the cvr back without the screen and then start the engine.
then post the results ;)
Can't on my bike.
The screen is bonded to the 'cover' and I'm not going to disturb the bond.
Quote from: devimau on July 28, 2010, 08:21:23 PM
to be honest with you I never gave it a big thought to it but the first time happened a few years back with a 748 senna, no oil pressure with the light on......after messing around with the pump and having .7 bars of pressure @ the mathesis I removed the screen and it was loose......I tighten it and wala pressure came back.
second time happened 3 months ago with a 998, customer bought it salvage and had no oil pressure (light on), he replaced the oil pump and was still the same and he brought it to me, I went straight to the screen and.....wala.....loose screen....tighten it back up and problem solved.
I can go and check all the drawings for the oil circuit but...for what???? I already experienced it twice to know it and that is good enough for me.
Well, I ain't trying it on mine. It is possible this might happen across the board without a strainer, or it might just be the 16 valves, they do oil differently. I looked at the oil circuit diagram in my manual and that shows no clues since it is a "goesinta" diagram of boxes and lines.
Someone out there with a two valve started up their two valve after an oil change and discovered the strainer on the floor. Fess up and report!
what does "wala" mean??
Quote from: ducatiz on July 29, 2010, 03:32:05 AM
what does "wala" mean??
It could be Voila misspelled.
Or it could be any of these http://en.wikipedia.org/wiki/Wala (http://en.wikipedia.org/wiki/Wala)
Or The Washington Association of Lawyers for the Arts
Or a bunch of other groups
I'm going with the first one ;D
Quote from: howie on July 29, 2010, 08:03:55 AM
It could be Voila misspelled.
Or it could be any of these http://en.wikipedia.org/wiki/Wala (http://en.wikipedia.org/wiki/Wala)
Or The Washington Association of Lawyers for the Arts
Or a bunch of other groups
I'm going with the first one ;D
i figured it was something from Three Stooges
Quote from: ducatiz on July 29, 2010, 08:05:08 AM
i figured it was something from Three Stooges
You forgot to capitalize I and put a period at the end of your sentence.
We missed you at DIMBY.
Threadjack over :P
Followup - color me stupid
OC last nite
by golly there's the pick up screen in there all right, helps to have a replacement in hand, though, not sure how I missed it before.
btw my Oil temp sensor needs a 21mm socket if you are doing this at home.
However, the 17mm allen wrench ain't gonna fit, the screen i bought from a fellow DMF'r (shout out) measures at 14mm hex, so it'll wait till next OC to remove (this is a 28K service item right), as didn't have anything handy to jamb in there and break off.