Bike will not run past idle

This is what I posted on www.svrider.com Nothing against any of those members, I would just like to see if this has happened to anyone here. What I have done since the problem is this: cleaned the carbs COMPLETLY, changed the o-rings, and changed the spark plugs. Here's my original post.

So I get the SV back together after a paint job and fork job, fire her up and she runs like crap. The bike fires up, and idles without issue. At about 3K the engine starts to sputter, backfire, and die. I didn't do any carb or engine work over the winter, and everything stayed bagged, plugged or covered with foil. The bike didn't run for about 5 months due to winter. A mechanic over here recommends putting everything back to stack and starting there. That doesn't seem necessary since it ran fine last summer before putting her away for the winter. Could it be something as simple as cleaning the crabs? I didn't do that before firing her up. Right no she has a Scorpion slip-on, K&N air filter Dynojet DJ144 mains, and 2.5 turns on the screw. Carbs can be frustrating sometimes Thanks for any help! -Mac

Here's the link to the post if interested. Thanks!

http://forum.svrider.com/showthread.php?t=103230

[flymo]

Sounds like dirty carbs. If the carbs were not drained before the storage period then the chances are you have old dried up fuel deposits all over the place in there.

[ophic]

probably not the issue but i had a 125 which would only just tickover because the battery was knackered. Touch the throttle and it would die. I'm assuming that a larger charge needs a stronger spark to ignite it.

Originally Posted by flymo

Sounds like dirty carbs. If the carbs were not drained before the storage period then the chances are you have old dried up fuel deposits all over the place in there.

When I cleaned them I removed all hoses, jets, floats, needles, sliders and sprayed the hell out of all parts with carb cleaner. I let them sit with the cleaner for about 30 min. I did not completely submerge them. I don't have the means to do that. I wiped them down and blew compressed air in all jets and passages. Did I not clean them properly? I want so bad to take it to another shop and just have them fix it, but I also would like to fix her myself -Mac

[flymo]

Originally Posted by Elm74

cleaned the carbs COMPLETLY, changed the o-rings, and changed the spark plugs.

Could it be something as simple as cleaning the crabs? I didn't do that before firing her up.

Sorry, I misread. It was the above two statements that confused me a little.

Its possible that you have some wear in the emulsion tubes/jets causing this. Sometimes a full clean can actually expose carb problems rather then cure them. Or possibly when you have re-assembled the carbs they are now different than before in some way.

Originally Posted by flymo

Sorry, I misread. It was the above two statements that confused me a little.

Its possible that you have some wear in the emulsion tubes/jets causing this. Sometimes a full clean can actually expose carb problems rather then cure them. Or possibly when you have re-assembled the carbs they are now different than before in some way.

Sorry for the confusion. I meant that she ran fine before I put her up for the winter. It was after I got her back together after the paint that the problems started. I did not mess with the carbs over the winter. -Mac

[fizzwheel]

Are you using fresh fuel, or fuel that was stored over the winter, if you arent using fresh fuel try and tank of it and see if it runs any better then. Unleaded doesnt keep well and it goes off over time. I've had similar trouble with my curvey SV after being sat for 6 months, ( wouldnt start and when it did it idled like a bag of cr*p, didnt run properly ) Fresh fuel cured that.

You could try cleaning the plugs / fitting new spark plugs if you havent tried that already

You could also check / remove the air filter and see what its like with that, or run it with no filter / no airbox lid on just to see if it idles any better like that.

Did you drain the carbs of fuel before you stored it up for the winter, again when unleaded goes off it can leave a gummy residue on the carbs internals ( float bowls, jets etc etc ) so that might be also causing you problems.

Start with the basics first i.e. Fuel, Air, Plugs, Spark and take it from there before you start taking the carbs apart IMHO.

Originally Posted by fizzwheel

Are you using fresh fuel, or fuel that was stored over the winter, if you arent using fresh fuel try and tank of it and see if it runs any better then. Unleaded doesnt keep well and it goes off over time. I've had similar trouble with my curvey SV after being sat for 6 months, ( wouldnt start and when it did it idled like a bag of cr*p, didnt run properly ) Fresh fuel cured that.

You could try cleaning the plugs / fitting new spark plugs if you havent tried that already

You could also check / remove the air filter and see what its like with that, or run it with no filter / no airbox lid on just to see if it idles any better like that.

Did you drain the carbs of fuel before you stored it up for the winter, again when unleaded goes off it can leave a gummy residue on the carbs internals ( float bowls, jets etc etc ) so that might be also causing you problems.

Start with the basics first i.e. Fuel, Air, Plugs, Spark and take it from there before you start taking the carbs apart IMHO.

I did not drain them before the winter I thought I cleaned them pretty good. A step by step cleaning/breakdown would be appreciated. I don't have access to a bath to soak them in. Do I need to soak them? Thanks again! -Mac