28PWK lean pilots?

[thrill-billy85]

just bought a set of used 28PWK's.

 

cleaned them up(already really clean to begin with)

bike started 1st kick but idling high. about 1/8th throttle equiv.

its jetted 140/45 middle clip

 

plenty of slack in the cables

no air leaks (it was fine 30mins before i took the stockers off)

i also did the b-12 trick and no change

 

air screws are all the way in, idle screws are all the way out.

 

if i pull the chokes 1/2 way, it idles nice and low like it should

 

the plugs are new, and aren't telling me a damn thing yet

 

im thinking the pilots are too lean. 48 or 50 seems to be what everyone else uses.

[robert0762]

If air screws are all the way in or more then 2.5-3 turns out you def need to go to the next size jet. Also since you have idle screws backed all the way out thats another dead give away. nut make absolutly sure you have no airleaks.

 

What mods do youhave and what is your elevation?

Edited November 26, 2010 by robert0762

[thrill-billy85]

If air screws are all the way in or more then 2.5-3 turns out you def need to go to the next size jet. Also since you have idle screws backed all the way out thats another dead give away. nut make absolutly sure you have no airleaks.

 

What mods do youhave and what is your elevation?

 

 

k&n snorkel removed

fmf fatties....

 

2800'

[robert0762]

I would def say you have an air leak cause i am running 42 pilots at sealevel with a 4 mill mx hardcore port from hjr no lid and a k+n pro circuit pipes

[hercalmighty]

Did you plug the two vents on top of the carbs by the intakes or run a hose between them?

[thrill-billy85]

Did you plug the two vents on top of the carbs by the intakes or run a hose between them?

 

UHHH.... are you talking about the choke balance tube on the STOCK carbs... if so these are not the stock ones.......

 

of course if youre not talking about those then id love to know which holes exactly your refering

[hercalmighty]

If you look at the top of the carbs on the intake side there should be little vents (there are in between the slide and intake boot). they are smaller then the vent lines on the side of the carb. Either you put a cap on them or run a piece of vent hose between the two carbs.

[thrill-billy85]

If you look at the top of the carbs on the intake side there should be little vents (there are in between the slide and intake boot). they are smaller then the vent lines on the side of the carb. Either you put a cap on them or run a piece of vent hose between the two carbs.

 

dude.... if your right then this is SURELY my problem....... it would make it run lean... which means idleing high and coming down when i pull the chokes..... just to be clear were NOT talking about the choke vacuum tube on the stock carbs, buy some kind of mystery tube on 28mm keihin PWK aftermarket carbuerators right???

[hercalmighty]

Yes. I am talking about 28 PWKs. I had a set on my banshee. I dont have a pic to put up. Like I said, it looks like a little vent nipple sticking straight up on top of the carb on the intake side of the carb. I think it may have been for an oil injector or something.

[thrill-billy85]

Yes. I am talking about 28 PWKs. I had a set on my banshee. I dont have a pic to put up. Like I said, it looks like a little vent nipple sticking straight up on top of the carb on the intake side of the carb. I think it may have been for an oil injector or something.

 

 

 

yeha i found pics of what youre talking about... im not sure mine has those. most of the ones i see in pics do, but i dont remember seeing those on mine. too bad im at work, and my fucking useless ass girlfriend wont get off her ass and go take a picture of them.... cuase she's "tired"...... cause she was up at 4am going to spend MY money on "black friday"...... but neglected to put my card back...... so now im at work... cigarette, and red-bull-less......

 

sorry i had to get that out real quick

[hercalmighty]

LOL.

I know the 30 OKOs dont have them. So far almost every set of 28s I have seen have them though. So check and see if you have them. If so you can just run a vent hose between them.

Also, your main sounds way lean. I would go up to at least a 150-152 main.

[thrill-billy85]

LOL.

I know the 30 OKOs dont have them. So far almost every set of 28s I have seen have them though. So check and see if you have them. If so you can just run a vent hose between them.

Also, your main sounds way lean. I would go up to at least a 150-152 main.

 

 

hell, they BOTH sound lean to me....... or did. fuck i hope youre right. now i gotta just sit here for 4 hours and WONDER goddamnit

[hercalmighty]

Oh, one other thing. I couldnt get my bike to run for shit with the airbox lid on. I tried just about ever main from 145-160 and it would just bog on top. Once I pulled my air lid the thing ran great and ended up with 45 pilot, 160 main, clip in the middle with a N68A needle. My mods were T6s, VF2s, air box with a twin air no lid, 20cc domes, +4 timing. Im at sea level also so you should jet down. When I threw the 28s on a buddy of mines, he had FMF fatties, 21cc domes, +4 timing, a Uni filter in an open box, Boyesen reeds on stock cages and his jetting was 45 pilot, 155 mains, middle clip on N68A needles

[thrill-billy85]

Oh, one other thing. I couldnt get my bike to run for shit with the airbox lid on. I tried just about ever main from 145-160 and it would just bog on top. Once I pulled my air lid the thing ran great and ended up with 45 pilot, 160 main, clip in the middle with a N68A needle. My mods were T6s, VF2s, air box with a twin air no lid, 20cc domes, +4 timing. Im at sea level also so you should jet down. When I threw the 28s on a buddy of mines, he had FMF fatties, 21cc domes, +4 timing, a Uni filter in an open box, Boyesen reeds on stock cages and his jetting was 45 pilot, 155 mains, middle clip on N68A needles

 

shit mine doesnt have the oil injection holes...... ahh well ill keep plucking away on it.gotta be jetting or an airleak somewhere.