990 "losing compression" feeling

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TheDak

Pack Dog
Joined
Jan 23, 2015
Messages
483
Reaction score
12
Bike
KTM 990 Adventure
Hi Guys,

Just want to check if anyone has had a similar issue or might know what this is and whats causing it.

It doesn't happen all the time but when changing down through the gears it will feel like once a change is made the bike is in
the lower gear but there's no compression, so the bike will not engine brake and i have to change down to a lower gear and then
it will be fine.

This only happens maybe once every 50km or so or my not happen at all some days.

I'm starting to think this may be valve clearance as i skipped that on the 45k major service that was done 1000km ago. If so that wasn't very clever of me  ???
 
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