Jetting Symptom?

[rooster300ex]

Ok say u start your quad up and the throttle is crisp, but when u get it warm or hot u know it looses throttle response, in nuetral when it warms up just lil it doesn't rev up crisply it cuts out alil. what is usually wrong when u have them symptoms.

[MadMax27]

Some indications that you may be too rich:
Power feels sluggish.
If the power seems worse when the engine is hot.
Putting on the choke makes it worse.
Dark plug readings.
Removing the air cleaner makes it better.


Some indications that you may be too lean:
Poor acceleration or it doesn't seem to rev out, sometimes if you back off the throttle slightly the revs will pick up.
Power feels better when you put on the choke.
Removing the air cleaner makes it worse.
Popping or spitting back through the carb.
Plug readings are white or clean.

From HMF website...

[jak1389]

hey madmax, thats some good info!

[rooster300ex]

I need more info??? Input!Input!

[TRXRacer1]

Do a plug chop but it sounds lean.

[rooster300ex]

I got the dynojet jet kit and i did stage 2 and it has the biggest mainjet in it. it runs good WOT. The only other thing that i can richen is the needle i still have 2 notches on the needle. And it also cuts out at a steady speed about lil over 1/4 throttle. i can figure it out.