Maintenance & Technical > KX500 Original

No bottom end power

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fredunderwood:
Ok....so you all were incredibly helpful in getting my k5 started....I was pulling my hair out!!!!!

So, I took it for a ride today....now bear with me as this is my first k5...so I hit it kind of expecting the front end to go vertical, but.....it didn't.    And it doesn't feel particularly fast, in fact, my kx250f feels faster!

So something must be amiss!!!!   So here are the deets:

Cleaned the carb....I mean really cleaned it took it all apart, carb cleaner, air blown.    Carb settings:
Clip 3rd position
170 mj
48 pj
1 1/2 air screw

All electrical checked to spec

Compression.....out the yingyang.....I can stand on the kicker and it won't kick over

New piston, rings, gaskets.

New fuel, mixed 42:1 bel ray

Gearing. 14t front; 48t rear

Ideas?

Foxx4Beaver:
possibly the KIPS aren't working...or the KIPS timing is off. Pull the little plastic cover off the right front of the cylinder, rev it up and see if they open. If that checks out, pull the pipe off and visually look at the valves and make sure they're both evenly open/closed.

your pilot jet sounds awfully lean too....to be on the safe side, you should go up to a 55pj at the least and then see how it runs....you can always drop or gain a size later once your in a safer/richer zone.

alward25:
+1 on the 55 pilot jet

fredunderwood:
I should mention too....when I was having my starting problem, after I fixed everything, it still wouldn't start with the choke......just by happenstance, the way I got the bike running was to hold the throttle open and kick.....fired up first time.


So I did order some pjs from jetsrus....a 65, 60 and 55

fredunderwood:
On the PV....when the bike is not running.....should the PC rod be pushed all the way in, or all the way out????

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