Replacing 4-Stroke Dirt Bike Valve Guides | KTM 500 Burning Oil | Part 4
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- čas přidán 10. 09. 2024
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Part 1 (leak down test) - • Is your KTM 500 4 Stro...
Part 2 (valve stem seals) - • Is your KTM 500 4 Stro...
Part 3 (piston rings) - • Is your KTM 500 4 Stro...
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:
/ goteki_audio_video
/ @goteki1987
seems way smarter than the method I used to remove valve guides off my old Husqvarna. I used a steel rod and a hammer and a torch on top of a piece of wood. It worked but it took forever.
Nice video !
It dosen't seem to be that hard, but not sure if i'll do it myself if I have this issue.
I hope it fixed your oil burning !
It turned out not to be too bad. And yes, fixed the problem
Can you provide a link for the 8mm steel dowel? I can't find it. Also, what length did you use?
I just searched Amazon. They were less than a foot long, just a few inches
What a rabbit hole you went down to find the oil consumption… in the same boat hoping to not go down that road.
So i gotta ask, other than the nics and scratches were there any other signs of bad valve guides? Mine do have a bit of side-to-side play. Already did the valve seals and of course that didn’t fix it.
The play in the valve is the thing to look for. That and repeated seal fails. The guides are meant to be softer than the valve stems so they’ll fail first I believe. You’ll see how much tighter the valves fit into the new guides.