Questions after oil, filter and spark plug change

[Atesz792]

Hi,
so I changed those mentioned above this afternoon.
First question would be:
after doing this, I started the engine as I always do, choke on, hit the starter. She started up nicely, revved up to 3k, then I adjusted the choke lever about halfway, she went back to 1,5k RPM, and only then did the red oil pressure idiot light go out. Is this normal? It didn't take as long to do as to read, about a few seconds.
Then the next question is, what do you think about my plugs? These are the old ones I took out after supposedly 10k km's:



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[Janx101]

When you do filter it takes a few extra seconds for the oil to fill the filter gallery and pressurise around the system. . So yep fairly normal I reckon. ... those plugs are not too bad but perhaps just a little on the light side? .. peanut buttery colour is ideal I believe?

[Atesz792]

Thank you, I thought about that, just needed confirmation for peace of mind (damn Iron Maiden... I almost wrote Piece Of Mind, LOL)
AFAIK the bike is bone stock, do you think it's lean enough to bother?

[The Buddha]

Leaner than Joan Rivers even when she's truning into a skeleton ...
I'd jet it ... but then of course I've been accused of rejettng everything ...
Of course its at idle, how you are in all the revs under varying loads is what matters.
Cool.
Buddha.

[bmf]

Did you fill the filter with oil before installing?


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[Atesz792]

I mean.. will this cause problems? Since some not-too-great experience with "fine-tuning" my scooter, I am a great fan of the mentality 'If it ain't broke, don't fix it.' (Or is it?)
bmf, last time I did, this time I didn't, since the volume of the filter itself is just a fracture of the volume of that cavity, so I thought filling it doesn't do much.. I think filling it comes from people with spin-on filters anyway.

[gsJack]

I've never filled the filter with oil when making an oil and filter change, that's the oil pump's job.    Put 80k miles on my 97 GS and 100k miles on my present 02 GS and the 02 showed 140 psi compression in both cylinders @ 100k miles this past spring.

Started doing oil changes on cars back in 1948 before they had oil filters or detergent oils.  Drained oil looked like a bucket of mud after 1000 miles back then.  Still did my own oil changes on my cars up until about 1994 and they had full flow filters for decades by then but I never filled a spin on car filter either.

Crank your GS engine over without starting with the valve cover off and bike on center stand some time and you'll see how fast the oil pump is moving the oil to the top, it's only a matter of seconds until it's spilling out on the floor if you don't stop cranking in time.   

[bmf]

I`m always surpised by the volume of oil the filter holds when I fill it, around 300 ml I`d guess, if that translates to even 5 seconds of main bearings running without oil pressure while waiting for the filter to fill, I'm happy to save it.

That said, it does seem very long for your oil light to go off after your change. Mine is never more than a second or two even after an oil change.

It was longer when I rebuilt the engine but then you turn it over without plugs until you get pressure.

My 72 beetle with a mesh filter never looks that bad when I change the oil, but then VW does recommend changes at 5000 km intervals, that drives me crazy - I seem to be doing it all the time! In south africa we often change car oil at 20 000 km intervals, with many new cars now at 30k.

Regards
Brett

[Atesz792]

OK, thank you all, I'll pay close attention to her for a while, but I figure we should be all right.