Whats wrong with this XB?

[Gloomshadow]

https://www.youtube.com/watch?v=sYz8rU0HrnM&list=UUE8KGpQMQNzk7ihuwsrsUqA

maybe oil pump gears?? is that knocking I hear or is that valves tapping?

 

[WIGGLE2]

That's ALWAYS the BEST thing to do.....sit there and run it with no oil pressure...................Hell....it may not have any oil in the swingarm for all we know..........OF COURSE IT'S GOING TO TAP!! No oil pressure....hydraulic roller tappets.........Ugggh

 

[AZmidget91]

If you are concerned about oil pressure, pull an oil pressure line and crank it over. You will find out real quick if it has pressure or not. If not, then yes there is a problem with the pump, probably the gear.

 

[squidbuellie]

Wow.... Check the oil and see if it has a brass color in it. If it has oil in it and it's full when was the last time you changed it? And with what weight oil did you use? I did notice that the oil light went out when the bike rpm's were over 1200.
Keep us posted

 

[WIGGLE2]

I did notice that the oil light went out when the bike rpm's were over 1200.

And that would lead me to believe chances are it is NOT the gear....If he lost gears, I don't believe the OP would come back (so to speak). Unless you JUST did this, I'd change oil and filter and see where you are for OP then. I believe MOST of that noise is the lifters are collapsed from no/low OP. Kind of hard to tell with computer speakers.

 

[Gloomshadow]

he just bought the thing in Brazil.. he doesn't know the history of it and he just put a full load of oil in it and it didn't go away.. this guy doesn't really know anything. Not even sure he knew how to check the oil. Anway.. he is going to check the oil pressure soon but I have never seen a light go out like that.. I have heard of the oil light coming on if the Primary chain was too loose. could it be that?

 

[UMDterp13]

Bad lifter, oil pump drive or beginning of a rod knock.

It's inside of a building so hard to tell with the echo.

I'd definitely be checking oil pump out. It could still spin once crank spools up a bit. Only takes about 5psi to turn that light off.

Rod knock is usually a loud thump. I can email video of both lifter/beginning rod knock & a serious racing incident rod knock (kept running through the session)
If it's bearable, I'd run it till bad things happen.
There's nothing easy or good about that noise unless r
Filling of oil was forgotten.

 

[wolfo68]

I'd guess his pump gear is shredded and as he's review it it's catching enough to pump the oil at enough of a volume to turn off the light but he's probably destroying the gear while he does it

 

[DualSportDad]

I don't know if it's just me or what but the motor sounds fine to me. I'd hook up a oil pressure gauge and check the actual number.

 

[TPEHAK]

Check the oil level in the swingarm.

 

[Gloomshadow]

its new oil and filter.. his amount is correct .. the old oil was an unknown and was doing the same thing. He is in a tropical city near the Amazon and is running 20W-60 for hot weather. He is looking for gauges to do the pressure test.. oil pump gear can be replaced without pulling the motor right?

 

[UMDterp13]

Yes, if you're careful, but it probably shredded the crank drive nut not the oil pump.

That happened to me on an 05.
Oil pump locks up from metal ingestion.

 

[user_deleted]

oil pump gear can be replaced without pulling the motor right?

tom: isn't this the brazilian guy you've been trying to help out for past several months? i would suggest telling him 2 things:
1-to assume his low oil pressure light is accurate and stop running the bike.
2-seek out a sportster mechanic in his area. most every major city in brazil has H-D's running about which equates to local H-D techs which equates to help available. at the very least someone down there familiar with sportsters can check and confirm oil pressure or lack thereof....will know how to remove filter/pump assembly and check system gears...and delve inside the cam/snout cover if required. assure your friend this is not shadetree mechanic ventures he should delve into with his total lack of motorcycle mechanical abilities. IMO

 

[Gloomshadow]

no this is another guy.. here is another video he just made
https://www.youtube.com/watch?v=25JNcHf12uk&feature=youtu.be

the oil light only comes on intermittently .. especially when the motorcycle is warmed up.. when its cold, nothing.

As for HD mechanics, forget it.. these guys cant afford Brazilian HD mechanics.

Telling a Brazilian not to run something because its broken is an impossible task.. you have to understand the cultures involved. I tried that already. They will commute to work in cars that have rods knocking for years .. they run shit until it doesn't run then wonder what happened.

 

[Gloomshadow]

ok thanks guys problem solved.. he took the bike to a local general motorcycle mechanic and it turned out to be oil pressure indicator switch.. pressure was normal

 

[Whiplash97]

Glad you got it figured out....it really does sound like something is going bad but these things make noise and a lot of it, it took me awhile to get use to all the sounds my '05 makes....other than the usual maintenance and small fixes ther isn't much you can do until something really lets go, i mean if you tore an XB apart every time it made some kind of noise it would always be in pieces, ride em till they pop...

 

[rah7777777]

Haha. As soon as I watched the video I thought, crap if there's something wrong with the internals of that bike, my bike is jacked too. They sound similar.... And I just had my top end rebuilt less then 50 miles ago.