636 Kleen Air Mod with Power Commander

[old man roger]

Quote:

Originally Posted by tayto94 gonna strip it tonight and make sure everything is seating properly and all plugged in. if the throttle bodies were not fully seated and letting a leak in that would prob do it aswell.. but anyway power commander shouldnt be affected by this mod yes?

Not in a negative way.

[tayto94]

stripped it and changed plugs, and made sure everything was seated properly. Started up and seemed to run better but il not know till tomoro till i get a good run. hopefully.

on a 2nd note, when routing the rocker to the crank, should there not be a vent to release the pressure building in the crank?

[old man roger]

The clean air mod when done correctly creates a vacuum not pressure.

The air valve is ported directly to the exhaust port, one way reed valves in the valve cover allow a scavenging effect, but wont allow pressure.

[~03~raven]

Quote:

Originally Posted by tayto94 gonna strip it tonight and make sure everything is seating properly and all plugged in. if the throttle bodies were not fully seated and letting a leak in that would prob do it aswell.. but anyway power commander shouldnt be affected by this mod yes?

Yes Tbs not seated correctly could cause that. Though more than likely you would notice the bike sounding odd at idle as well. Just depends how bad the vacuum leak is.

Like OMR just said kleen air done right will create vacuum not pressure. The AIS system that normally hooks up to the pair valves on the top of the head, which are like unidirectional flow check valves, are an emissions thing that pulls air from the airbox and directs it to the exhaust ports of the head to help burn off some residual unspent fuel. The crankcase breather stock routes to the airbox so hot oily air is constantly entering the combustion chambers. So when you hook the crankcase breather up to the pair valves they pull all that nasty oily air to the exhaust. Also prevents oil from getting into the cylinders on a drop so you don't hydrolock the motor.

[tayto94]

Yep i get yas. was just wondering would the vapour of the oil cause some expanding gas and it not have anywhere to go. cheers

bike idles fine when the problem was happening, would happen alot with the likes of coming into a drift or coming out of one. will get proper run this evening and see how it goes

cheers

[tayto94]

Checked over everything and the mod was done correctly. all parts of airbox plugged. done a smoke test and there was no air being sucked in from around the airbox. Took it out again and still would bog every so often.

Changed the air intake back to stock (no kleen air mod) and took it out all day yesterday to see if that eliminated the problem. Still bogged two or three times. not as bad as before but still. Im now thinking that maybe one of my coils is on the way out. It feels like its dropping a cylinder for a couple of seconds then it comes back in

[old man roger]

Quote:

Originally Posted by tayto94 Yep i get yas. was just wondering would the vapour of the oil cause some expanding gas and it not have anywhere to go. cheers bike idles fine when the problem was happening, would happen alot with the likes of coming into a drift or coming out of one. will get proper run this evening and see how it goes cheers

like mentioned before, the air valve is ported to the exhaust so the ''expanding gas'' does have some where to go.

Quote:

Originally Posted by tayto94 Checked over everything and the mod was done correctly. all parts of airbox plugged. done a smoke test and there was no air being sucked in from around the airbox. Took it out again and still would bog every so often. Changed the air intake back to stock (no kleen air mod) and took it out all day yesterday to see if that eliminated the problem. Still bogged two or three times. not as bad as before but still. Im now thinking that maybe one of my coils is on the way out. It feels like its dropping a cylinder for a couple of seconds then it comes back in

Remember that having the clean air mod done is very important on the 636 if you are going to be stunting it. It will save you from blowing a rod out the front of your motor.

[tayto94]

Quote:

Originally Posted by old man roger like mentioned before, the air valve is ported to the exhaust so the ''expanding gas'' does have some where to go. Remember that having the clean air mod done is very important on the 636 if you are going to be stunting it. It will save you from blowing a rod out the front of your motor.

yep i get ya mate, putting it back in and gonna test coils now. think its dropping a coil , thats whats causing the dead spot

[rockstar]

Got the kleen air mod on mine and PCM3 and runs great... def check your coils... especially if the lines are all taken care of...