in need of major help with 1984 kdx 200

buckwheat_la · 07-30-2008

so i have a 1984 kdx, that has a dead spot in the midrange exceleration. It has had this problem since day one, I have rebuilt the top end, rebuilt the carb, redid the exhaust, new reeds, new airfilter, and after all of this, i still have a spot in the midrange that it doesn't run properly at. Does anyone have any ideas for this. I have been told at this point that it may be that the cylinder is worn (not likely but am grasping at this point). I could really use some advise for this.

Saleenguy · 07-30-2008

Quote:

Originally Posted by buckwheat_la

so i have a 1984 kdx, that has a dead spot in the midrange exceleration. It has had this problem since day one, I have rebuilt the top end, rebuilt the carb, redid the exhaust, new reeds, new airfilter, and after all of this, i still have a spot in the midrange that it doesn't run properly at. Does anyone have any ideas for this. I have been told at this point that it may be that the cylinder is worn (not likely but am grasping at this point). I could really use some advise for this.

Did you rejett the carb and put the clip where it needs to be etc?

Or just rebuild it.

Also its old, so parts caould be warn in the carb.

So what did you replace in the carb?

buckwheat_la · 07-31-2008

i had the carb rebuilt at a local shop, they assured me that it was cleaned up, a jet replaced etc. So when it didn't work, i borrowed my friends carb also off a 84 kawasaki 200 kdx (which runs perfect) and tried it and it still ran really poorly with the same lag, but thanks for the imput but i am pretty sure that the carb (s) are ok.

Billy B · 07-31-2008

Just a shot in the dark but is the kips valve operating correctly?

07-30-2008	#1 (permalink)
buckwheat_la Newbie Join Date: Jul 2008 Posts: 6	in need of major help with 1984 kdx 200 so i have a 1984 kdx, that has a dead spot in the midrange exceleration. It has had this problem since day one, I have rebuilt the top end, rebuilt the carb, redid the exhaust, new reeds, new airfilter, and after all of this, i still have a spot in the midrange that it doesn't run properly at. Does anyone have any ideas for this. I have been told at this point that it may be that the cylinder is worn (not likely but am grasping at this point). I could really use some advise for this.

07-31-2008	#4 (permalink)
Billy B Still On The Kickstand BTK Beginner Join Date: Mar 2008 Location: Columbia, Tn Posts: 40	Just a shot in the dark but is the kips valve operating correctly? __________________ Kdx200-RBdesigns modified head and carb KX250 fork swap FMF torque pipe FMF turbine core2 VF3 reeds

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07-31-2008	#3 (permalink)
buckwheat_la Newbie Join Date: Jul 2008 Posts: 6	i had the carb rebuilt at a local shop, they assured me that it was cleaned up, a jet replaced etc. So when it didn't work, i borrowed my friends carb also off a 84 kawasaki 200 kdx (which runs perfect) and tried it and it still ran really poorly with the same lag, but thanks for the imput but i am pretty sure that the carb (s) are ok.

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