Just bought a mint 2003 K5 today, not as much power as expected?? have pics :)

[93cbra]

Hi guys, new to the forum and just looking for some feedback. I'll get right to it. On the road my (new to me as of today) 500 barely lifts the front wheel when rolling the throttle in 3rd gear. Seems a bit faster then my past kx 250 and yz450 but not by much. Is this normal?
I have a new plug and new gas. The sprockets are 47 and 14 (this is stock correct?)
I'm running a NGK B8ES plug
Not sure what the jets are (will clean them tomorrow and find out what they are (any recommendations on sizes? I live in NH close to sea level. Yes I realize there's a jet chart and will check it out).
Bike starts and runs great but seems to hesitate just a bit when hitting the throttle.

I'm runnning my fuel at 32:1

Just thinking it should have more power. The bike was maintained very well and not ridden much (not a scratch on the frame or plastic). The plug I took out was a bit blackish brown.

[kaw rider]

i would check to see if the powervalves are working.

[93cbra]

Dam I meant to ask that, is there an easy way to tell if it's working (take the plate off and give it throttle and see if it moves??)

Also, anyone know what I should expect for a compression test?

[kaw rider]

105-164psi is what the factory manual said.

[93cbra]

Thanks a lot! I'll check it tomorrow.

[kaw rider]

depends on where your powervalves are at it will change your readings.

[500freak]

yours isnt running right at all.. my rips right up in 4 and 5th.

[98kaw5oo]

Pull the plug out of the end of the silencer.

[muleman]

Pull the plug out of the end of the silencer.

lol

[Polar-Bus]

Pull the plug out of the end of the silencer.

lol

Don't laugh, it's probably true, I did it once, and now I never use those stupid friggin' butt plugs.....

[93cbra]

Yeah I did it before also

I checked out my bike. The jets were way of (52, 158, position 2). The compression was 155. I rejetted it and it feels a little better. I guess I was just expecting more. I did all my testing on a road, I'm sure once I get it on the trails it will be a handful LOL

[azracer19]

I did the same thing on the 450 it shot out like a cannon...going to use is when the neighbor kids have there potato gun fights... that turbine core silence he has cost me an overall ( in my class ) at the adelonto gran prix years ago...i crashed hard and the silencer the way it points down was clogged full of dirt, i noticed it while laying down watching everyone pass me 3 times. As far as not lifting the front wheel on a 3rd gear roll on,,,,theres a big problem unless he is lugging it just past the point of stalling. There are many times I wish it didnt come up so easy. Throttle control big time is needed. Sounds like jetting is way off or the kips is closed shut. i think even lugging it mine will come up.

[Johnniespeed]

On the road my 500 will pull the wheel up in fourth with just the flick of the wrist, also in fifth but not as quickly.
 There must be something not set up right or mismatched modifications. There are many many riders who can outride me, but I have not found a dirt bike who can pass the 500 on a road. Usually when the other bikes run out of power on a road, that is when I wheelie past just to show off.

[500freak]

sounds exactly like my bike!!! GOT TO LOVE THAT POWER

[dsrtrider]

what oil are you using at 32:1?  I think most guys here run like 40:1 maybe higher.