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Yamaha MX & Off-Road Dirt Bikes
Wierd YZ125 problem....what should I do?
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[QUOTE="yamikawi21, post: 1315495, member: 98600"] I bought my 97 YZ125 two years ago. When I bought it it would usually start in the first 2-5 kicks. Since I bought it the number of needed kicks has gone up steadily. Starts easy once warm but up to last month it would take 20-30 to get it running. I took it out couple weeks ago, it ran fine. Bogged out because I was in too high of gear, fouled the plug. (this has happened on my bike several times and was never really a big deal). Got it back and put in a new plug, could not get it started after that. The kick-starter is REALLY easy to push, I can easily pull it all the way down with one finger...this would lead me to beleive theres no compression. BUT, I did a compression check, and after five hard kicks it reached 130psi, but wouldnt go higher than 135. I thought that 125-135 was adequate compression for these bikes? I havent replaced my top end since I bought it, and have probable put about 30-40 hours on it (not much for two years). I have good spark and I know theres fuel because the plug comes out with gas mixture on the plug, just WILL NOT START no matter what I do. I was ready for a new top end until I found how high the compression still is...but the compression meter reading does not match up with the ease of the kick-starter, so I'm confused. I need some suggestions...should I do the top end, what could be the problem, why wont it start...? Any advice is appreciated. Thanks. -CUBE- [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Wierd YZ125 problem....what should I do?
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