Swapped in Zr CDI- now powervalve cycle 3x

[motocrazy2006]

ok just swapped in a zr900 cdi in my 05kk carb. for riding in low altitude. well started it up. then swapped the cdi. now the powervalve motor is cycleing 3x... bad CDI? or what other issues do i need to look at? notice i do have 1 valve out of adjustment cable is slack. would that cause it?

 

[Idcatman3]

ok just swapped in a zr900 cdi in my 05kk carb. for riding in low altitude. well started it up. then swapped the cdi. now the powervalve motor is cycleing 3x... bad CDI? or what other issues do i need to look at? notice i do have 1 valve out of adjustment cable is slack. would that cause it?

cable adjustment can cause that, yes.

 

[motocrazy2006]

Ill try to adjust them. Other thing is sled idles rough with this cdi. Swapped back the otherone. Idles smooth and pv only cycle 1x

 

[motocrazy2006]

Ok here is what i got. im thinking its an CDI issue.

cables were out of adjustment, for some reason i had them a little tight.

So adjusted cables to 38.5mm. Swapped in Stock CDI- started cycled once. Rotated to open and back down to point cables just barely had pressure released.

Put in the Zr cdi- started rotated to fully open and back down way past the point of the cables not having pressure and actually pushed the cable housing out of the holder and cycled 3x.

part number is cb7220 which is for 03zr900 which ive heard is the early build, becasue pn-cb7227 is also the zr900 low altitude cdi.... but im wondering did the early build sleds have a differnt cable spec? called my dealer and the 05 900s zr/kk all specs were 38.5....

My issue is, is if i tighten them down to where they are tight with this cdi- would be like roughly 30mm.. then when we go out west and i swap the stock cdi back in id have to adjust back to the 38.5.

But also maybe the zr cdi is mapped for more pull? im not sure any info would be great.. or maybe its the cdi is junk- did buy it used off HCS... Thanks guys...

 

[clutch]

The early build 900's had a different cable and spec for the cable. You need to use the early build cables with that cdi.

 

[Rixster]

When you say CDI do you mean CDI ? as in your coil not your ECU computer? I have a hard time believe that a ignition coil "cdi" would do anything to your power valves. As for the 3 cycle thing, A carb 900 will cycle once on start up to check the valves, if they are out of spec (cables) they will cycle twice more.

 

[motocrazy2006]

I mean ecu ... not the ignition coil. Its for low altitude out of a zr900.... found out its an early build. Aorta that's my issue.

 

[Rixster]

I assume it is a carbed sled ? you can find a ecu for a carb 900 on ebay most of the time for under 150.

 

[motocrazy2006]

Yup just bought another used ecu off ebay from country cat. Off newer zr900 for 150. Came today. Pluged it in. Everything works great... now to sell my early build ecu

 

[Repoman]

900 ZR ECU

You could have just put in the ZR needles in the carbs, it will fatten up the lean spot, mine has ran now for three years and has not burned down.

 

[motocrazy2006]

I did that as well. Didn't wanna risk burning it down

 

[01ZRTCAT]

There was a different length cable for the early build, (shorter) The Zr/KK/Mtn Cat all take the same needle! 59, some say 9dfh-59 or h2-59 but they are the same exact needle!

 

[Repoman]

needle difference

I believe the ZR needle you want is 9DFH02-59 or the ZRT needle 9DFH02-58 the "02" part of the number calls out a different tip to the needle size/length which fattens the mizture.