Idle problem and more

[HarJim81]

Thanks for the previous feedback everyone . I took my carbs off again and checked the lines going to the bowls. Gave them a flush and were working fine . I ruined my gaskets in the process. Had to get new ones on ebay. So I reinstalled the carbs . I thought one of the vacuum lines were loose so I put a clamp on it . I turned on the fuel and the choke . The bike made a stumble but didn't start . I turned off the choke and used the throttle and it started. It was rough . But then I noticed fuel pouring on the floor . I drained the bowls and turned on the valves again . Same thing happened. Fuel pouring out the air box. What have I done now ? I finally got fuel to the bowls and now it's too much . Lol . There was one less hole in the new gaskets than the old ones ? Not sure if that would make a difference? Any help would be great . Thanks Harry

[bikerphil]

You probably have a stuck float, if you tap on all 4 carb bowls with a screwdriver handle while they are filling, it will most likely free up. The float(s) can get stuck in the down position on initial filling, once they pop loose and "float", they should be fine.

[HarJim81]

I'll give that a try .thanks

[Dbshea]

I have YET to fill a set of dry bowls without at least one float getting stuck. A quick rap with a soft tool sets them straight 98% of the time in my case.

[motoman]

I have YET to fill a set of dry bowls without at least one float getting stuck. A quick rap with a soft tool sets them straight 98% of the time in my case.

If you have had the bowls off, and didn't look at each float to make sure it had equal distance on each side of carb housing..........then you NEED to do that still. No such thing as a stuck or hung float....unless that equal distance wasn't checked before float bowl assembly.
All this scenario means is there is a float that is STILL cocked at a slight angle.

[TopCatGr58]

Hey Brant,

It's time for these photos again,...thanks to the fellows in the UK!

There is a DROP tang setting that controls how far down the floats will drop, and it set too far/too open, this can happen. See how the float needle is cocked slightly at an angle preventing it from being able to be pushed up by the float.



This shows that drop tang that can be adjusted to prevent the float from opening too far and to keep the needle from dropping down too far, so that it doesn't get cocked and jam the float...which is why it/they can require a little percussive persuasion to behave!



T.C.

[motoman]

A good addition to the 'hung float' scenario T.C.. IMO, what you showed would only happen majority of time if someone went and 'tweaked' the wrong tang initially for float adjustment.......or installed the bit shorter K&L float needles.

Bottom line in my opinion is..............folks here need to slow down a bit and be VERY precise with their assembly procedure.........have seen WAY to many issues brought up here that have been nothing more than in WAY to big a hurry to just 'wanna go ride'! No apology, and it DOES get a bit 'wore-out' after awhile. Be safe, and ATGATT!

[dbbrian]

Thanks for sharing those pics and explanation T.C. Don't have that issue, but someday I will be into the carbs I'm sure.

[Prisoner6]

Thanks for the previous feedback everyone . I took my carbs off again and checked the lines going to the bowls. Gave them a flush and were working fine . I ruined my gaskets in the process. Had to get new ones on ebay. So I reinstalled the carbs .......... But then I noticed fuel pouring on the floor. I drained the bowls and turned on the valves again. Same thing happened. Fuel pouring out the air box ...

Might one or more of the floats be getting hung up on a bowl gasket?

When installing brand new bowl gaskets, you should always check for interference , and trim them back if necessary.

[HarJim81]

So I solved the float problem . Gave them a tap with the screwdriver. Now I find myself back to where I started . The choke doesn't seem to be working right . The bike is not getting to a strong idle on starting. It's stumbling around a 1000 rpm. You have to warm it up with the throttle. Then when it's warm and you rev it up it sticks at around 2100 . What the heck is going on ... will adjusting the mixture screws solve this problem ??? Thanks

[DiverRay]

Sounds like the enrichment circuit jets are plugged. They are in the bottom of the float bowls. The rising idle is usually carbs not synced/tuned properly. You need to sync carbs EVER TIME you pull them because they WILL change.

[Jeffintampa]

nightmare

Man I know your pain for sure. I had this problem till I had them all rebuilt sync them, and set all my valves.