88'' carb jetting

got a '02 softail deuce twin cam 88. vance & hines big shots, stage 1 air cleaner, 10.5mm screamin eagle plug wires. problem is tryin to jet the carb right. it currently has a 48 slow and 195 main in it along with the cv performace deluxe tuner kit. this thing is dead off idle and is very hard to start back up when warmed up. also pops constantly thru the carb. wat am i doin wrong here

I'm no expert but it sounds like you should go back to the basics of adjusting the idle speed and idle mixture screw. I think the 48 should be usable, but after you have exhausted the idle proceedure and still can't get it to work you may have to try a 46 jet. The 195 is not a problem for you yet, don't even touch this one untill you got the off idle problem fixed.

One more thing; go back to your stock slider spring if you changed it for the lighter one and start there again. I think the lighter spring is for big cams or something. I didn't like it when i tried it.

I agree with Tom & I'd start with a 45 slow & 2.5 turns out on the idle mixture screw. Get the off-idle to 3000 rpm range dialed in before you mess with the main jet & the needle that came with the CV kit should work fine. If adjusting the idle mixture screw while the engine's running (fully warmed up) does nothing or next to nothing, that almost always means the slow jet is too big.

hey thanks to both of you guys for replying. im no expert at this tuning stuff so thts why i asked. so let me ask you this.. does it make sense to go bigger on the slow jet. thats what i just did, took it out for a ride(its rather chilly here, about 52 degrees) and from idle to about 3200rpm it pulls like a freight train! and no popping. idle mixture screw is set at 2 turns out right now. no visible black smoke from the pipes either

sorry i forgot to say which one i put in. Its got a 50 slow jet in now. 195 main is still there. idle mixture screw at 2 full turns. idles at 1000rpm. brand new intake gaskets at both the heads and carb throat body. cv performance slide spring and emulsion tube also. as far as the gas cap, wat should i look for there. is there a sign tht would lead me to jetting the carb? ive heard tht many times of guys swappin caps

I'd bet that's too big. I'm not experienced with the twin cam engines, but I can tell you that a 50 slow is too big for an 88" Sportster engine with ported Buell heads that flow a lot more. And as mentioned, it's easy to check - if adjusting the idle mixture screw (engine running) does nothing or next to nothing, that almost always means the slow jet is too big.

Some tanks are vented directly, others are not & need a vented cap. You can check to see if there's a vent hose running from the bottom of the tank - I don't know for your particular bike.