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hans_peda_417 Added a reply to YZ125 Low Compression
2/1/2021 9:23am The bike runs fine (I'm almost at sea level), but I feel that recently it's losing some power. For example, in some corners I have to use way more clutch than before. The spark plug looks fine. I just wanted to make sure everything is OK with the cylinder/piston. But I will now measure the compression again with the new...
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hans_peda_417 Added a reply to YZ125 Low Compression
1/31/2021 5:12am Thanks everyone for your replies. "90 psi is very low, engine should not kick start" Well, in fact the YZ runs fine, it starts at first kick - it could have more power, though. So with this comment, I think my pressure meter is faulty. I've ordered a new one and will measure the compression again. What is a wet...
hans_peda_417 Started a new thread YZ125 Low Compression
1/30/2021 11:32am I have a 2011 YZ125, which I like a lot. I recently put a new piston. It's a Wiseco Racer Elite piston kit. The website says: "ArmorPlating protects against wear caused by heat and detonation. ArmorFit skirt coating adapts to the proper piston-to-wall clearance during initial operation, and remains at that clearance, reducing operating friction throughout the life of the...
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