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Dirt Bike Brands - Other
Confounding problem (1993 CR250R)
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[QUOTE="Faded, post: 1125930, member: 38322"] SilverSurfer, You can dynamically check to see if the CDI is working if you have an inductive timing light. Eric Gorr outlines the procedure in his book. Also, the factory Honda manual recommends rechecking/resetting the base timing when replacing ignition related components like what you have done. IMHO this sounds like an exhaust valve problem to me, just curious if you've taken the steps to insure that the exhaust valve is installed and adjusted properly, and is opening fully. The exhaust valve rod that slips into the cases is a splined shaft and may have been installed improperly which limits the travel of the exhaust valve. These are not assumptions, just ideas on things to recheck. Checking Base Timing per the Honda Manual: Remove the left side (igintion) cover. Look for three different timing marks, one on the bottom of the case (triangle), one on the stator plate (index mark, looks like '|') and the 'F' mark on the flywheel (looks like '||'). Start the bike and allow it to idle. With the timing light focused on the 'F' mark rev the engine to 3000 rpm. The index mark ('|') on the stator plate should line up in between the 'F' mark ('||') on the flywheel. If it does not, scribe a new index mark on the stator plate. Shut the bike down and adjust the stator plate until the newly scribed index mark lines up with the timing mark on the case (triangle). Checking the CDI dynamically per Eric Gorr: Remove the left side (igintion) cover and hook-up your inductive timing light. Start the bike and allow it to idle. At idle note the relationship between the index mark on the stator plate and the 'F' mark on the flywheel. When the bike is revved to mid throttle (the RPM at which peak torque is made) you should see some advance. As the bike is revved higher the timing mark should jump back to about the same location as it is found at idle. These of course are the short/condensed versions since typing pages of info isn't something I enjoy doing...but it should be enough to get you going in the right direction. Good luck. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Confounding problem (1993 CR250R)
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