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Everything Dirt Bike
Make / Model Specific
Honda
1988 CR250R Wont start / Wet Plug
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<blockquote data-quote="SRAD97750" data-source="post: 176363" data-attributes="member: 425"><p>Did it smoke really badly when it was running? Did the smoke smell terrible? How much drained out when you changed the trans fluid? Was it the correct amount? Lots of gross spooge out the exhaust that doesn't look like it was vaporized?</p><p>A bad crank seal on the oil side will display itself clearly in a super 'rich', hard to start, stinky mess.</p><p>A bad crank seal on the air side will lean out the engine detrimentally, or be impossible to start.</p><p>Crank seals are easy to change.</p><p></p><p>As far as me suspecting crank bearings for the excessive kickstarter pressure, It's just a guess about my bike, and it hasn't concerned me enough to change them. <img src="https://www.dirtbikeaddicts.com/static/images/smilies/noidea.gif" class="smilie" loading="lazy" alt=":noidea:" title="Noidea :noidea:" data-shortname=":noidea:" /> It's not an 'expert task,' just more involved than crank seal replacement as you have to split the cases. Any 'home garage mechanic' should give it a shot once or twice.</p><p>-BIG DAN<img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif" class="smilie" loading="lazy" alt=":thumb:" title="Thumb :thumb:" data-shortname=":thumb:" /></p></blockquote><p></p>
[QUOTE="SRAD97750, post: 176363, member: 425"] Did it smoke really badly when it was running? Did the smoke smell terrible? How much drained out when you changed the trans fluid? Was it the correct amount? Lots of gross spooge out the exhaust that doesn't look like it was vaporized? A bad crank seal on the oil side will display itself clearly in a super 'rich', hard to start, stinky mess. A bad crank seal on the air side will lean out the engine detrimentally, or be impossible to start. Crank seals are easy to change. As far as me suspecting crank bearings for the excessive kickstarter pressure, It's just a guess about my bike, and it hasn't concerned me enough to change them. :noidea: It's not an 'expert task,' just more involved than crank seal replacement as you have to split the cases. Any 'home garage mechanic' should give it a shot once or twice. -BIG DAN:thumb: [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Honda
1988 CR250R Wont start / Wet Plug
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