Oddly, this is a GS500.
This bike has had a history of spitting out the end cap on the valve cover even before I got it, and I had it working for a few 100 miles. But today it spit it out again.
Has anyone else had it happen to a GS or anything else.
Cool.
Srinath.
My guess is that cam shaft is missing the end spacer washers. So the cam end is hitting the calve cover gasket and pushing out one of the half moon things of the gasket.
Or could be the wrong cam?
If thats not the part being pushed out, pictures please?
Other possibility could be something wrong with the valve or valve seals for the valve closes to what pops out. Cylinder gasses on ignition could be puffing up through the valve stem and is causing the gasket part to pop out.
Make sure the outlet screen on top of the valve cover isn't plugged or the hose from it to the air box either. A crankcase without venting can build considerable pressure to blow out those seals and the older more worn engines would have the highest pressure. In the good old days autos had a big pipe open to the air near the ground to vent the crankcase and a worn engine spewed out very visible smoke. If that's it blame it on the EPA. :icon_lol:
I will look into both of these - these 2 struck me almost right away ...
But adidas - this is a 95 - the 04+ were what had the cam side drift shims, and this bike actually makes no noise indicating drift. In effect the drift of 1/2 the thinnest shim was too loud for me on my 48K mile GS, so I dont think this is drifting and pushing it.
GSJack - very definite possibility. The motor feels very powerful, too much to have a leaky ring etc - but I'll definitely check it.
I think it may just be a defective valve cover or I hope not - a mistake in machining the head.
Cool.
Srinath.
To what degree is it spitting it out? If just a little bit, could be an after market gasket. The OEM valve cover gasket has some metal stuffs in the half-moons but the Chinese stuff is just rubber -- they don't hold their shape w/o the real deal gasket.
Quote from: Bluesmudge on May 13, 2013, 08:37:15 PM
To what degree is it spitting it out? If just a little bit, could be an after market gasket. The OEM valve cover gasket has some metal stuffs in the half-moons but the Chinese stuff is just rubber -- they don't hold their shape w/o the real deal gasket.
Oooo that's a good one - I will look - I dont remember seeing any metal in any of em though. I think I fished these out of a gasket kit I had.
Its spitting the top right - right intake side - does that indicate anything ? I may try and check if the cover is on rotated 180 degrees. If that may matter.
Cool.
Buddha.
You can't put the valve cover on rotated 180* it's not symmetrical.
Quote from: gsJack on May 14, 2013, 06:15:06 AM
You can't put the valve cover on rotated 180* it's not symmetrical.
I thought it was, that top vent cover was what I would use to set it correct. Now let me look - I am going stupid I think. Too much solder fumes and not enough gas fumes.
Cool.
Buddha.
Quote from: The Buddha on May 14, 2013, 05:25:53 AM
Quote from: Bluesmudge on May 13, 2013, 08:37:15 PM
To what degree is it spitting it out? If just a little bit, could be an after market gasket. The OEM valve cover gasket has some metal stuffs in the half-moons but the Chinese stuff is just rubber -- they don't hold their shape w/o the real deal gasket.
Oooo that's a good one - I will look - I dont remember seeing any metal in any of em though. I think I fished these out of a gasket kit I had.
Its spitting the top right - right intake side - does that indicate anything ? I may try and check if the cover is on rotated 180 degrees. If that may matter.
Cool.
Buddha.
OEM has metal buried inside the half moon thingies.
Line mentioned, possibly your valve cover vent is plugged up and pressure pushes out the thingies.
What? Still no pictures? You know the rules!
I ordered the gasket.
The bike has spit its gasket in the hands of the previous owner as well. The crank case vent I will go over, but I think I have changed everything in that part - the valve cover has been powdercoated blue. But its not on the bike yet.
Time to whip out everything for the job.
Cool.
Srinath.
Still no pictures?
Aren't you aware of the rules?
Pictures or it didn't happen.
The gasket that got spit has the metal end cap. The new ones also have the metal.
I am replacing it.
Pics - I hate taking and putting up pics. I will see what I can do.
Cool.
Buddha.
(https://lh4.googleusercontent.com/-MNgnuF_NMok/UZVknEEG_EI/AAAAAAAAB18/Qw--5yMTOVQ/w702-h468-no/GS_Dilapidated_valve_gasket.jpg)
(https://lh4.googleusercontent.com/-x0w9KfSs048/UZVktU_o0MI/AAAAAAAAB2I/Nd2QOVn28Eg/w349-h523-no/GS_Gasket_corner.jpg)
(https://lh6.googleusercontent.com/-X8_rK3YKevo/UZVkvlBxmJI/AAAAAAAAB2Q/CeoACQrsX9I/w349-h523-no/GS_Gasket_corner_2.jpg)
(https://lh4.googleusercontent.com/-ndhrhQbaSGk/UZVkz_OzZgI/AAAAAAAAB2Y/_4Thi1YsQRs/w702-h468-no/GS_Gasket_crappy.jpg)
(https://lh5.googleusercontent.com/-ZEgIPSL0aPM/UZVk4btmG4I/AAAAAAAAB2g/dJOsxXnplwk/w702-h468-no/GS_Valve_cover_end.jpg)
(https://lh4.googleusercontent.com/-ILYRoHBseis/UZVk9bJaC6I/AAAAAAAAB2o/EMmw3L6BQaQ/w349-h523-no/GS_Valve_cover_head.jpg)
(https://lh5.googleusercontent.com/-zAqRP2T2QnA/UZVlDjZfDgI/AAAAAAAAB2w/z8p-gFixiII/w702-h468-no/GS_valve_cover+without_gasket.jpg)
(https://lh5.googleusercontent.com/-tm5jZYM97YQ/UZVlInrr9AI/AAAAAAAAB24/y4QLKOTl5eg/w702-h468-no/GS_valve_cover_broken.jpg)
Yea crappy looking gasket to start with. I think I intended to change that when it was ready to go ... and being my life it got forgot.
Took nearly a yr of many many rides to get it to pop out. I suspect it was also the same one that popped out before. I wont have put on that bad a gasket. I am guessing I never took it off.
Cool.
Buddha.
There isn't any high pressure in the valve cover to cause that. There is the open vent right to the air box.
Only thing that would come to mind is a bad valve seal closest to that one that pops out. A sudden high pressure burst leaking through the valve stem could eventually cause it to go.
The only thing the valve cover does is to keep oil from splashing out. No pressure in there, just lots of oil splashing around. Unless the head has a crack and oil under pressure is coming out at that spot, blowing it out. The head does have oil under pressure to lubricate the cams.
I think I had a crappy gasket that should have long been tossed in the trash. It only pushed the end cap out. I yanked @ it and got the semi circle off to try to get a machinist to see if he can make it out of aluminum if needed.
Bike is now ready for a test ride. May get on it tomorow.
Cool.
Buddha.
Well, I guess one question is if it was always spitting out the SAME gasket. If same - then bad gasket. If someone was wise and changed the gasket when it pit one out, then I'd say internal issues.
So was it the same gasket all this time? If so, logic would dictate to put on a new gasket. If the new one did it, too.... then look into further problems.
New gasket is glued into a nice clean blue powder coated valve cover, and been run for 50+ miles over about 4 rides. Its holding up fine.
I suspect that old gasket was on its last legs for years and years, and well subsequently lost both of em legs several years ago. I'm guessing it spit that same corner out.
The history is - Its previous owner (jetswing) showed it to me with the popped gasket. I squinted, said OooooK and tossed it in the truck and got it home. I bought it in pieces with him having started a part out cos of this problem if I recall. Now I dont remember if it was that same corner. It was 2005. I am sure however I didn't replace that gasket, and I may also have never taken the valve cover off. I would have said, yea yea I'll get it when I do a valve adjustment which will be as soon as the bike is assembled. Then d-uh I put it together and ran it ... for a year.
Cool.
Buddha.