Is your KTM 500 4 Stroke Burning Oil? | Part 1 | Performing a Proper Leak-Down Test diagnosis
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- Опубліковано 15 вер 2024
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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 launch 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 (this video) we show you how to do a proper leak-down test to measure compression on your cylinder. In part 2, we show 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.
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
Perfect break down and explanation
Great Video! Is the decompression valve closed at TDC or does it have to be manually closed? I'm getting leakage so not sure if I'm at the wrong mark on the cam gear or?
I'm I hearing this wrong? Or are you adding the letter H to the word "used" ?
Lol it's your vision of Will Wheaton....cool whip..it gets me every time :)
great videos thx for info and reviews
Maybe, lol. My mom was from the Midwest so I'm sure I've got some accent that I don't notice 🤷♂️🤔😀
How did you hold the engine at TDC?
There's a screw on the engine that you take off, take the washer out and reinstall it and that keeps the piston at TDC.
Can you tell us what leak down tester your using please? The standard ones that use 100 psi, always move piston down when you connect them or are too low pressure. I have two, but they’re both for automotive. I believe the piston doesn’t move in your case because you’re applying the pressure slowly or did you have a way to hold the piston in place at top dead center?
Did your leak down tester have small enough 10mm adapter to seal against the head? The one I bought off amazon won’t thread in but one thread before the adapter is bottoming out before reaching the O ring.
I threaded into the spark plug hole. Sealed great
@@ExtremeSportsWannaBes I figured out both leak down testers I bought had too wide of 10mm adapters to seal against the head. Once I got a narrow adapter it worked great.
A leak-down test will not check your valve stem seals. It would test your valve seats, but not the seals. If valves were leaking past the seats, the pressure would escape through the intake & exhaust ports on the head before reaching the stem seals. Not writing this to be a dick, just don't want others to think they are testing something that they're not & waste time/money.
I believe his logic is; if it’s not compression related then it must be the seals.
If it is compression related then do the rings and cylinder and seals when he pulls the head.
@@ssgi4059yep
What kind of oil did you run in your 500?
The stock stuff, Motorex 4t 10w-50