Problem with my shee performance

[Walleye]

Now when i start it, the left cylinder will run, and the right wont. then later after another start, the same thing happened. so my friend figured that the fuel hose on the right was kinda pinched too much. so i replaced it, and now the right cyl runs, but the left does not. so i go ahead and replace the left fuel line, and now the left runs but not the right??? wtf is going on? now only the left will run after a few restarts.

 

Sparks read out fine, blue sparks. on both sides. i even tried to switch around the spark wires and tors wires, didnt make a difference.

 

Right now my fuel lines are uneven length. that was how it was when i got it. so i am thinking maybe the lines have to be equal length? and if that is true, then the right cyl is the one with shortest line. about 1 inch in difference, maybe more shorter than the left one. well if it is true, then the short one should be getting fuel before the long one would. and that theory isnt true right now. and i do see fuel in both lines.

 

 

what could the problem be? carb related or fuel line related? I just put on brand new fuel filter too.

[steveodo]

Hey my fuel lines are not the same length an mine runs fine . Have you tried cleaning the carbs make sure to clean the pilot jets, they control the fuel on start to about 1/8 thortle.good luck

[Dinner]

I know this may sound dumb, but sometimes when i drain the fuel out of my carbs when i have them apart and put it all back together and start it, only the right cylinder will fire, so i just pull the choke out and it pulls the fuel into the left cylinder, and then she'll run fine after that.

Edited April 25, 2006 by Dinner

[Walleye]

umm the carb is totally clean, washed and cleaned it out dry before installing it in after building up the top end. i have 300 main and 27.5 pilots, i cleaned the pilot port clean with carb choke cleaner. should be clean.

 

 

i will try the choke trick tomorrow. doubt it makes a difference.

[steveodo]

How long ago was your rebuild? did you check for air leak or broken reed?

[sheefreak]

Always blow compressed air through those tiny pilot jets, carb cleaner alone 9 times out of 10 will not get the dirt to brake free completely. I would look at our breather tube on your gas cap though, sounds like it may be clogged. And run some air through those pilots!

[Walleye]

How long ago was your rebuild? did you check for air leak or broken reed?

507386[/snapback]

 

 

i just put it together wed last week, didnt get it fired up until yesterday due to the stupid tors and its senstivity to tight throttle adjustment.

 

havent even put it in gear yet.

 

will try the choke trick first thing and if all else fails including the breather tube. then i will tear down the carbs again and clean it out again with cleaner and this time blow air cause i didnt the last time. it looked so clean though.

 

will know more tomorrw but keep the suggestions coming in! thanks

[Walleye]

Okay im at school, and i let my friend fire up my shee at home, and do the choke trick, when he fired it up both cyl fired and ran for a sec then the right faded out, he tried the choke and the right fired up and left died out, let go of choke and left fired up and right faded away and died. It keeps on alternating..

 

wtf is going on? is it playing mind games with me now? lol

 

my thought is just tear down both carbs and clean it all over again even tho it is already clean.

[batoutofshell]

I would say get a new petcock for you fuel tank maybe its not letting enough fuel down to support both carbs and its going to the stronger side thats pulling it down. Just a thought not a scientist

[Walleye]

petcock looks fine, it flows alot fuel no problem.

 

 

i just tore apart the carbs and cleaned it all out and blow air in every single possible port, put it back in, replaced fuel lines, and rerouted the lines, fired it up, still the same damn problem.

 

choke off, the left runs (the side with the choke assembly) runs fine, but nothing is running on right, pull choke full, left fades and same time right fires and runs, close the choke completely, right fades, as left fires up and runs. pull the choke half way left still runs, and the right will pop and miss.

 

I have no clue what the problem is.

 

when i was looking at the carb, the right does not have a straw, the little thin copper tube sticking out of the bottom of the carb, not the bow, the bowl has one which is angled. and the left carb has one sticking out of the bottom and on the bowl too. is there supposed to be one on the right as well? i thought it was not there due to that theres no choke assembly on that side.

 

I even replaced the choke tube between the carbs, no differece.

 

im thinking of buying a spare right carb from a motorsport store where they are currently tearing down a banshee to part it out. or should i get left carb?

[MILO]

are you getting the carbs back in sync each time you tear them apart?

 

are both of the slides in the correct way, cut out to the air box?

 

are the carb bowls on the correct sides - the left one has a 'starter jet' in the bottom of a tube that's molded into the side of the bowl. you'll see where it opens into the bottom of the bowl. the right doesn't have a jet or opening into the bowl.

 

probably not the case, but double check that the carbs don't have different size pilots.

 

take the gas cap off and try it. you also said that you put in a new fuel filter also, an inline jobby? maybe it's restricting fuel flow. take it off and give it a shot. make sure that all the fuel lines are not restricted and free flowing.

 

do you have the normal 1 to 2 carbs filter set up or a filter on each carb? either way, make sure that the filters clean and there's nothing blocking the intake boots, or no air leaks from cracks etc.

 

that's all i can come up with at the moment. good luck bud.

Edited April 26, 2006 by MILO

[Walleye]

carbs are in sync

 

bowls are on the correct carb

 

all jets, mains, pilots etc are the same

 

slides are in the right way

 

i have stock air box, normal 1 into 2 setup with kn filter, no lid, reed spacer

 

i even tried opening the gas cap

 

removed fuel filter

 

did so many things, it still runs only on left while sitting, and idling, only way to fire up right is to choke, but then that kills the left.

 

how do i tell is by the pressure coming out of the muffler, and the temp of the pipes. right is always cold, colder than outside temp when idling for long time.

 

so i gave up, and took it for its first ride on the new motor. This is the strangest thing i have ever owned, it ran so perfectly fine, nice powerband, strong bottom end, lifts the front easily in 1st gear at half throttle. but the high power seemed low and sluggish in a little way, with 300 jets, and i swtiched to 280 jets, its much better.

 

went out for a hour ride, pulled plugs out and theyre all brown like a perfectly roasted marshmallow.

 

 

Now heres where me and my friends are still stumped with is why does it only run on left at idle??? it kinda bothers me. But we think its how it is designed.

 

SO is it actually supposed to only run on left at idle?

 

I mean it runs great, i even tried to start it with the right spark plug wire off, it wont start at all.

 

So what is going on here?

[batoutofshell]

The only thing I can think now is when your idling its not pulling enough fuel to idle take the fuel filter off

[biggun6ss]

I would take out your air filter and look down into your carbs and see if one of your slides is hung open. Maybe when ideling the right side is getting too much air to run, then when you pull the choke out the left side is getting too much fuel. Just a thought