Dirt and water passed the air filter screen 2014 YZ450

After washing my bike with the Twinair air filter cover in place, a little water made it passed the Twinair cover into the intake. I shined a flashlight into to intake and noticed that tiny granules of dirt also passed through the screen into the intake. I service my air filter after every ride and even use a small amount of Notoil grease to seal the filter. I'm pissed. This shouldn't be happening. I guess I need to take off the intake and clean it out. Anyone experience this on 2014-2106 YZ450's? Suggestions? Thanks. Dave

Pressure washer? 

Pressure washer? 

No, but the pressure from my hose with a nozzle is really strong. I have the Cycra Powerflow Shroud kit and the filter and air box gets really dirty after 1 ride. I started using the Twinair cover to clean that area when I washed the bike. I can't understand how dirt made it past my filter and through the screen. It's just tiny little particles of dirt, but still.

Just pull the intake and the throttle body off then you can rest at peace. That's my opinion only takes 15 mins to strip it and handle the issue

You have to let the whole area around the filter cover dry before putting the foam on there.  If there's still water there, it will go through/under the foam.  The angle of the airbox opening doesn't help this.

 

I usually leave the airbox cover on there overnight while I'm cleaning/oiling the air filter, just so there's no water present both on the filter, and on the airbox.

Just pull the intake and the throttle body off then you can rest at peace. That's my opinion only takes 15 mins to strip it and handle the issue

Sounds like good advice. Thanks!

You have to let the whole area around the filter cover dry before putting the foam on there.  If there's still water there, it will go through/under the foam.  The angle of the airbox opening doesn't help this.

 

I usually leave the airbox cover on there overnight while I'm cleaning/oiling the air filter, just so there's no water present both on the filter, and on the airbox.

There was no water prior to putting on the Twinair cover. I just carefully pulled off the air filter, cleaned the area where is seats with contact cleaner, then put on the Twinair cover nice and tight. I washed the bike and used a towel and compressed air to blow off everything. The next day I went to prep it and pulled the cover off and found that water had penetrated the cover. Not a lot but enough to concern me. Thats when I noticed that a tiny bit of dirt had made it passed the screen into the intake, which really concerned me. Thanks.

If you used an aerosol contact cleaner, that may have blown debris into the boot?  Doesn't explain the water however.

Ease up on the water pressure while washing the area.  Even a high pressure nozzle on a garden hose can drive water under stuff like an air box cover, and dirt with it.  Pressure washers can actually shove water past a gasket.  A "shower head" style spray is much more advisable. 

If you used an aerosol contact cleaner, that may have blown debris into the boot?  Doesn't explain the water however.

No, I wouldn't do that. :) I sprayed it on a paper towel and wiped it down. Thx

Ease up on the water pressure while washing the area.  Even a high pressure nozzle on a garden hose can drive water under stuff like an air box cover, and dirt with it.  Pressure washers can actually shove water past a gasket.  A "shower head" style spray is much more advisable. 

That's what I thought. I've seen Factory mechanics using the Twinair air box cover and a pressure washer, so I thought it would be okay. Guess not.

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