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Discussion Starter #1
i just got an 87 r that i love, but, i dont know if its because of the extreme cold here (about 8 degrees) or something else, but my r bogs bad in the mid range. maybe i dont let it warm up long enough(about 2 minutes)? i trust the guy i got it from, so i dont know. what should i look at?only motor related upgrades i know of is the k and n filter and an lrd pipe and silencer
 

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Does it doit all the time?
 

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always let it warm up till the rad or rad hoses are warm. try moving the needle clip down a notch or 2 or put a couple sizes bigger main jet in it. cold temps do affect jetting as does altitude.
 

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okay, ill try that....i figured i should be warming it up longer.thank you. ive heard a lot about these "loading up", whats that? i used to have a banshee, and i already like my r more, i just hope it has that pull of 2 stroke power like my banshee had
 

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so i took it out today, its still freezing cold out, but i couldnt wait. this time i let it warm up for about 5 minutes when it would idle on its own, btw.....where is the idle screw? but it ran a little better, still bogged a little in the midrange, but this time, i felt the 250r power, and i now feel like an addict. but, ive noticed a lot of oil coming out of the exhaust, at the start out of the motor, where the two pieces of the exhaust meet(lrd) and at the rear where it connects to the silencer. could it be running rich? would that cause the bog in the middle? btw... im running amsoil dominator at 50:1, the previous owner ran amsoil saber outboard at 50:1. any clues? suggestions? help? thanks in advance for your input
 

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well if moving the needle clipped helped your jetting is off. move the clip up to the middle position and put a bigger main jet in it. oil leaking out of the manifold and pipe siolencer junction is common. take the pipe off and manifold and clean off all the goo. get a new manifold gasket and spray some high temp copper spray gasket on it and bolt it back up. for the rear you can use a piece of rubber hose or old intertube and a hose clamp or two.
 

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Discussion Starter #8
well, i pulled out a br8es race plug, put in a new br9es normal plug, and it started on the second kick, so im assuming i fouled the br8. but, it still bogs in first, a little in second, but the bog is gone in 3rd gear and up. whats that about?
 

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5 minutes is not enough warm up. idle until the cylinder is warm to the touch, the i ride around slow with moderate revs, just off the pipe until the cylinder is warm through my glove. It needs to be warm for it to run right.
 

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have you ridden it on more than one occasion since putting in the new plug? alot of times after warm up, hte engine will want to "load" up so to speak and will need to be cleared out a bit. that made have been the case. taking in account that you say it was ok after running through a few gears.

from time to time i'll experience this after a warm up with my R's after they set for a while. after clearing its throat(blipping the throttle a bit) they are fine the rest of the day.

i do reccomend that you do a plug chop to be certain that your jetting is right and all. i also recommend that you try using a b8es instead of a resistor i/e br8es
 

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Discussion Starter #11
well, i rode for about 20 minutes today, and it seemed the same, bog in first, a little in second, and was fine from 3rd up. seems like its going through a lot of gas, would a rich condition cause my symptoms? i also heard reeds somewhere, could those do it? thanks guys
 

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ok i had the same prob...... just open your stator cover or u may have to by a new fly wheel/stator

or it can be the fly wheel pin

or it can be the reeds bent just take them out an flip them

can be the carb flote/jets

sucking air intack or head
 

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its odd that you have a mid/upper problem in 1-2 but not 3-6. typically the problems get more pronounced the higher a gear your in since there's more load on the engine. whats your plug gapped at? if its not already, try it gapped at .018. the reeds are easy to check. pull the cage off and see if you can see light through any spaces. the petals should sit tight and flat with the reed cage. like 86quadR said do some plug checks too.
 
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