400ex has no power in gear

[Honda400ex1987]

I put a dyno kit in my carb and a k&n filter and it ran fine for a week then i was just cruising down the road and it just lost all power but it idles fine and sounds like it revs fine in neutral but as soon as you try to drive it it has no power

[nakomis0]

Clutch?

[PunkA$$]

Check to see if the main jet vibrated loose and fell out. :confused:

Happened to me on an old xt 125.

It'll be getting way too much fuel so it just bogs when you hit the gas.

[RiderTRX400ex]

yea jetting, or clutch

[400exstud]

It sounds super rich. It bogs and dies as you dump the throttle real hard?

[JOEX]

Originally posted by Punk*****
Check to see if the main jet vibrated loose and fell out. :confused:

Happened to me on an old xt 125.

It'll be getting way too much fuel so it just bogs when you hit the gas.
If I were a gambler i'd put money on that one.

[kudek#21]

Im thinking that when you put the main jet in you may have loosened up the stem that you put the jet into, or you may have put to little or to big of a jet in, also check the air/fuel mixture screw....i always have to re-set that when i change my jets.

Tony kudek #21


400 ex
oversized cams
wholeshot tires
jet kit
k&n filter
hmf pipe
white bros rev kit
pro taper bars
moose racing nerf bars
air box lid off
smaller rear sprocket