fin_676

It may be that either the slide needle or the main jet and emusifier are from a carb tune kit like dynojet and the other is not and if there is a mis match of parts then it may lead to the needle sticking
but then it may be the slide that is sticking

Brian

on another read of your post im a wee bit confused as the needle should stay firm in the slide
as the slide goes up it draws the needle with it
the needle sits in the main jet blocking most of it
the needle is taperd
as the slide goes up it draws the needle with it the taper of the needle then allows more fuel to come through the main jet this extra fuel should be in direct proportion to mix with the extra air being allowed through the carb by the slide un blocking more of the carb throat

Brian

glider

Drilling the slide does make the slide react faster BUT it can have adverse effects under certain circumstances of a bog when you open the throttle suddenly.

You have to figure out if it is the needle sticking in the jet or the slide itself hanging up.

Breeze3at

The needle does not need to move up/down in the slide, it stays stationary and moves with the slide. The drilling out your friend did was the other hole behind the needle. That affects the vac. diapraghm. Some like it drilled others don't. IMO leave it alone.

__________________
I don't ride fast, but I do ride far.

Conde54

Judging by online pictures I believe that my needle is from a Dynojet ket. CV kits seem to have a needle with a head on the top. Dynojet needles seem to have grooves at the top where you place and e clip (just like the one in my carb) should i purchase a regular carb kit from harley-performance.com and go through the whole thing? i am assuming thats why it sticks in the slide

fin_676

You will need to examin the emulsifier tube and main jet to find out what they are but stock harley parts work well in the carb the bits all just need to be the right match and correct sizes

Brian

glider

You are correct that the HD needles are non adjustable. I would return the carb to stock parts with 2 washers under the stock needle head for best running.

Also do something with the jets too and find out if they are also DJ jets, youmay want to return them to stock along with the needle but keep all the parts the same as far as manufacturer.

*Twin Cam CV Carb Rejet Suggestions - Harley Davidson Community (*Twin Cam CV Carb Rejet Suggestions)

Conde54

I understand that the needle does need to move up and down. the reason i am concerned that it sticks is because i dont think it can get down by itself to seat properly causing it to run rich.

NEWHD74FAN

Before this exercise how clean was the slide needle area, with the air cleaner off and the engine running...when rolling on the throttle did you see the slide move up and down relatively free, with no jerking and carbon impeding it, the accelerator pump squirt strong stream of fuel in there? You may have to spray Gumout Carb cleaner in the needle/slide area, and small openings...you may have to blip the throttle a bit to keep from stalling engine. Remember to use eye and ear protection when doing this...cause backfiring does sound like a possibility here.

__________________
* Please click "Self Help Tips" tab for service tips, diagnostic codes & such * ;o) * Please click "Search" tab and keywords to find related threads *

Bodeen

This is the way to smoother running, trust me I was in a similar situation with some unknown parts. Put it back stock, buy a new slide if its been drilled, put a 46 in it and two washers. You'll be pleased, I am.

Bodeen

Conde54

I'm going to Harley to get the stock kit for the CV carb. Going to get a stock needle but just so I get it right i need a main jet at 46 what about the pilet or low speed jet?