Carb issue?

[mrgreen98ski]

Just posting for ideas.

Just rebuilt my 1996 gsxr1100. This is in my 1994 gsxr 750 frame.  I a using the 38mm carbs from my old 750 motor. I just put in a jet kit for the 38mm carbs on an 1100. My issue is it's starts and sound fine for a few seconds than it starts to crap out I try to throttle and I have to give it allot to get any results. Sounds like it starts to miss fire.

Timing is on I have double checked this. I tried new plugs. I have spark on all 4. The plugs are a little black when I checked and wet from fuel.

The jet kit is a #150 main. 2 down on the clip. Stock pilot. 3 out on the air/fuel mix.

It ran last year on the #116 main I had in it form the 750

I am thinking of tossing th main back in to see what  happens.

Thoughts

[Gixer1460]

Black / wet plugs = too much fuel. As it's unlikely you've even got on to the main yet it is unlikely the culprit. I'd look at the pilot / idle circuits first off. What air filter arrangement have you got? I know its not a direct comparison but my 1186 with 36's never needed bigger than 136DJ mains - the air flow in yours will be slower, so using a bigger jet works but the main does seem large?

Oh and the plugs won't last like that and cleaning generally don't work for to long! They'll start misfiring then die completely - invest in a couple of new sets - more expense!

[mrgreen98ski]

I was stupid when I did my carbs and did a shit job of cleaning them. I am gonna start there by removing and cleaning the the way I should have in the first place.

I was In a hurry to ride and this is maybe the out come for not doing them right.

On a side note I turned the air file mix screw down from 3 to 2 and I could get it to stay running. It s a rough idea but didn't die.