Drop in oil pressure during high speed running.

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Elvis
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Drop in oil pressure during high speed running.

Post by Elvis » Wed Sep 05, 2018 9:43 am

Bought a new Shoei gt air and went for a ride to test it.
I wanted to see how it handels at 180kmh and after 2-3 minutes the oil pressure indicator was on.
I stoped almost immediately, let the bike cool down and restarted the engine, light still on and cam chain very noisy which means no oil pressure.

It seems that the high pressue due high rpm broke something, any idea what to look for?
Later today i will pull out the oil filter and 2 screens to see if i can get some clues.

Can it be that the high pressure valve on the oil pump is now always open?

The bike has only 25000km on it so i whould not suspect oil pump failiure.

Also due to some chain noise i changed both cam chain tensioners, bike ran ok after the change.

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limeyduffa
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Re: Drop in oil pressure during high speed running.

Post by limeyduffa » Wed Sep 05, 2018 1:29 pm

When you start bike cold, what does the oil level do on the oil tank ?

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Re: Drop in oil pressure during high speed running.

Post by Elvis » Wed Sep 05, 2018 5:05 pm

limeyduffa wrote:
Wed Sep 05, 2018 1:29 pm
When you start bike cold, what does the oil level do on the oil tank ?
I did not started it yet from cold i waited 10 and start it again and in the oil tank there was low level oil with evidence of circulation, after engine turned oil level went up some bubbles, this clearly shows the pump is working.

I drained the oil today and remove the 2 screens and filter, all looks good no broken pieces of somthing and the oil was clear (5000km on it)

Next step is high pressure valve? Or should i fill her up and start the engine

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Re: Drop in oil pressure during high speed running.

Post by limeyduffa » Thu Sep 06, 2018 2:16 pm

Sounds dodgey to me Elvis. You don't want a high speed lock up. Definitely time to split the cases and check that pressure valve. That's the only thing I can think of.

Reminds me of an uncle who owned 1000 Vincent twins. These engines had a oil starvation fault at high revs and would lock up at the most inconvenient time. He blew up two bikes :)

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Re: Drop in oil pressure during high speed running.

Post by Elvis » Fri Sep 07, 2018 6:32 am

Problem found! The clip of the oil pump sprocket went out and the sprocket is now stuck between the case and clutch basket

I found it out by inserting endoscope from the oil screen side so I don't know yet if there is more damage inside

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Re: Drop in oil pressure during high speed running.

Post by limeyduffa » Fri Sep 07, 2018 9:52 am

F@cking hell. Circlip ?. When you pull the cases off, take some pics.

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Re: Drop in oil pressure during high speed running.

Post by Elvis » Fri Sep 07, 2018 4:09 pm

oil pump sprocket.jpg
and this is how it looks like in the manual
oil pump sprocket manual.jpg

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Re: Drop in oil pressure during high speed running.

Post by Elvis » Fri Sep 07, 2018 4:13 pm

i found the broken tooth but still missing the clip, pin and washer.
I guess once i open it i will find them

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Re: Drop in oil pressure during high speed running.

Post by Elvis » Fri Sep 07, 2018 7:39 pm

The thought that my life depends on a cir clip makes me crazy, assuming the damage is only to sprocket any ideas how to secure it in addition to the cir clip?

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Re: Drop in oil pressure during high speed running.

Post by limeyduffa » Sat Sep 08, 2018 2:33 am

That is potentially a catastrophic failure and it's a safety issue. My recommendation is don't do anything. Contact the dealer and take it from there. This could result in a model wide recall !

J

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Re: Drop in oil pressure during high speed running.

Post by Elvis » Sat Sep 08, 2018 7:14 am

If i will contact my local KTM dealer my bike will in the shop for half a year, last time a i had a crack in the water hose and it took him 3 weeks to get the part, in this time i mange to order it and install my self and he had the nerve to be pissed at me because now he have nothing to do with the 10 euro pipe he ordered.

I think there is a case here to go for a lawyer but life is too short for this shit.

I contacted KTM AU, we will see how it goes.
after that i will make a video of my findings and go on-line warning owners with LC8 motor not to ride fast on them.

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Re: Drop in oil pressure during high speed running.

Post by limeyduffa » Sat Sep 08, 2018 10:30 am

Hi Elvis,

Yes, good move by contacting KTM directly. If no response via email within 1 week, then send a registered letter giving them at least 2 weeks notice to respond (state that in your letter). If no response/action within a month, then "name n shame" with a youtube video.

I know the feeling. My bike was sitting in the dealer for 7 weeks in 2015 waiting for coolant hoses. I gave up in the end and ordered Samco hoses and gave them to the dealer to fit. When it was at the dealer during this time, somebody swapped out two of my tappet buckets in my rear cylinder and rounded my cam bridge bolts in the process. :evil: I'm done with dealers now. My next bike won't be a KTM. I'm flogging my SMT now until it breaks. It's fun owning a bike you don't give a shit about :D.

I would also recommend posting your experience on superduke.net. This 990 forum is almost defunct. There are many more 990 SD out there and the supeduke.net is very active.

J

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Re: Drop in oil pressure during high speed running.

Post by Elvis » Sat Sep 08, 2018 5:05 pm

Although my bike is 2012 it has only 25000km and this is what i dont understand, how come no other cases turned up by now? maybe it is known to KTM and was fixed under warranty quietly?
unless there will be a fix that eliminate the use of the clip i will sell it after it will be repaired.

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Re: Drop in oil pressure during high speed running.

Post by limeyduffa » Sun Sep 09, 2018 9:55 am

Yeah, fair enough hey :). What bike would you get to replace the SMT ?

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Re: Drop in oil pressure during high speed running.

Post by jhalfhide » Sun Sep 09, 2018 10:45 am

Is it a normal circlip or the kind with the two holes that needs the reverse pliers?

I’d have thought the latter kind would be more than up to the job.


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Re: Drop in oil pressure during high speed running.

Post by Elvis » Sun Sep 09, 2018 2:53 pm

jhalfhide wrote:
Sun Sep 09, 2018 10:45 am
Is it a normal circlip or the kind with the two holes that needs the reverse pliers?

I’d have thought the latter kind would be more than up to the job.


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In the manual it looks like the normal one that you can pop open with flat screw driver but what ever is there its or broke or slip out, i will know better when the case cover and clutch basket will be removed (either by me or KTM)
limeyduffa wrote:
Sun Sep 09, 2018 9:55 am
Yeah, fair enough hey :). What bike would you get to replace the SMT ?
don't know yet, i may go back to Buell as i was very happy from my last one, it was almost maintenance free bike with loads of torque.
From the new bikes XSR 900 in the 60 year's edition can be a replacement.

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Re: Drop in oil pressure during high speed running.

Post by jhalfhide » Sun Sep 09, 2018 5:11 pm

I’d replace with one of these. No chance of it coming off at all.

https://images.homedepot-static.com/pro ... 4_1000.jpg


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Re: Drop in oil pressure during high speed running.

Post by eagle_awd » Mon Sep 10, 2018 2:08 pm

That really blows Elvis. :evil: Hopefully you hear back from KTM.

Have to add it to check list once I open her up this winter...
Elvis wrote:
Fri Sep 07, 2018 6:32 am
Problem found! The clip of the oil pump sprocket went out and the sprocket is now stuck between the case and clutch basket

I found it out by inserting endoscope from the oil screen side so I don't know yet if there is more damage inside

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Re: Drop in oil pressure during high speed running.

Post by Zombie Master » Mon Sep 10, 2018 8:57 pm

Sorry to hear this Elvis. Makes me wonder if I should continue on with my SMT :(

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Re: Drop in oil pressure during high speed running.

Post by jhalfhide » Mon Sep 10, 2018 9:04 pm

Zombie Master wrote:Sorry to hear this Elvis. Makes me wonder if I should continue on with my SMT :(
First person we’ve heard of with this issue. Properly weird one but I wouldn’t panic yet. Does sound like it should be a better clip. The clip they’ve used will hold 99% of the time, it’s just better to use a stronger clip and be 100%


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