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Part 1 (leak down test) - https://youtu.be/gcBw9n3VMk4
Part 2 (valve stem seals) - https://youtu.be/4lwCdbMpiIE
Part 3 (piston rings) - https://youtu.be/TsvwBJzaOas
In this video we continue our series on how to diagnose and fix a KTM four stroke 500 that's burning oil. Burning oil is distinct from burning coolant (which has different causes entirely and different symptoms but is sometimes confused).
Basically, oil can get into the combustion process in two ways. 1. Leak down around the valve stem seals, or 2. Leak up past the piston rings.
In part one we showed you how to do a proper leak-down test to measure compression on your cylinder. In part 2, we showed you how to actually change bad valve stem seals. In part 3, we show you how to go a bit deeper and change your piston rings as well. In this video, part 4, we take our final step and show you how to replace worn down valve guides by pressing out the old guides and fitting new ones.
I suggest that you follow these videos in order if you're trying to diagnose a bike that's burning oil as I break it down into the simplest test and resolve method. If you're looking just for tips on valve stem seals or piston rings, feel free to jump to the appropriate video for all the details.
I'm also happy to answer any questions you might have about my experience with this process. Drop a comment below!
Video editing by Nikola Popovic:
https://www.instagram.com/goteki_audio_video/
https://www.youtube.com/channel/UCjwxp4vUUnAW4lLrbClFvgg