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Everything Dirt Bike
Make / Model Specific
Suzuki
90 RM 250 Starting issue
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<blockquote data-quote="2smoke" data-source="post: 86395" data-attributes="member: 563"><p>Well I hesitate to tell you, but......... When I got my bike it ran just fine when I first got it. It was jetted pretty close for the time of the year also. Then summer time rolled around and I started to lean it out for the air temperature. Everything was fine till late summer. Then it developed a rich condition that wouldnt go away no matter how lean I jetted it. So I figured it was time for a new top end. So I replaced the top end and rejetted the carb for the elevation and temp and started my break in. Well it was a little to rich during the break in process so I started leaning the jetts out and no matter how lean I went on the jetts it was still way to rich, and it was a major pain in the ass to start. So I started asking questions just like youve done. Long story short I found out that the Nikasil coating that the cylinder is coated with was just plain old worn out. After all at the time it was like 16 years old. So I tore the engine down stripped all the steel parts off of it and sent it off get it replated. $500 dollars later I had a more or less new cylinder. Put a new top end in it again and its ran like a charm ever since.</p></blockquote><p></p>
[QUOTE="2smoke, post: 86395, member: 563"] Well I hesitate to tell you, but......... When I got my bike it ran just fine when I first got it. It was jetted pretty close for the time of the year also. Then summer time rolled around and I started to lean it out for the air temperature. Everything was fine till late summer. Then it developed a rich condition that wouldnt go away no matter how lean I jetted it. So I figured it was time for a new top end. So I replaced the top end and rejetted the carb for the elevation and temp and started my break in. Well it was a little to rich during the break in process so I started leaning the jetts out and no matter how lean I went on the jetts it was still way to rich, and it was a major pain in the ass to start. So I started asking questions just like youve done. Long story short I found out that the Nikasil coating that the cylinder is coated with was just plain old worn out. After all at the time it was like 16 years old. So I tore the engine down stripped all the steel parts off of it and sent it off get it replated. $500 dollars later I had a more or less new cylinder. Put a new top end in it again and its ran like a charm ever since. [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Suzuki
90 RM 250 Starting issue
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