carb cleaning question

[zeolig]

HI
I am having carb problems and have cleaned the carb several times. It is really clean except for the small brass tube that runs up the side of the jet tube in the center of the carb. Whatever is in this tube is as hard as rock and I have tried guitar string , carb cleaned and compressed air. The spree will rev but will not idle and I am thinking it is this one small tube that I can not get clean or air to pass through it.I know that the tube is pressed in but I am afraid of exerting too much force to remove it. and I do not want to chrush it with a vise grip. Any idea? Should I twist it and pull up on it to take it out? Help! I am so close.

[CaptDan]

HI
Any idea? Should I twist it and pull up on it to take it out? Help! I am so close.

I must've done something bad to carbs in my previous life because they seek me out for all manner of punishment.

But I've learned to fight back with 'nuclear power.' In other words, bathing 'em in a can of carb cleaner. (Be sure to remove the neoprene gaskets.)

You can get carb cleaning kits at places like "PoopBoyz," 'Shmucks' or any well stocked auto parts store. More expensive than aerosol spray, but generally more effective for the really nasty cleaning jobs.

CaptDan

[zeolig]

Thanks, but what if I just put some of the nasty stuff inside the tube itself. The rest of the carb is clean. I actually attached some fuel line to the brass tube, filled the tube and see if it would work it's way in but no go. I will try some of the expensive nasty stuff. thanks again. Any other ideas aand is this tube supposed to be clear? Gerry

[CaptDan]

Thanks, but what if I just put some of the nasty stuff inside the tube itself. The rest of the carb is clean. I actually attached some fuel line to the brass tube, filled the tube and see if it would work it's way in but no go. I will try some of the expensive nasty stuff. thanks again. Any other ideas aand is this tube supposed to be clear? Gerry

You could just soak the upper half of the carb followed by a water rinse, (per the kit's instructions.) Then, hit the idle tube (I think that's what it is) with an additional spritz of compressed air. Examine your work, and if there's still crud in the tube, extract it with a thin piece of wire.

Point is, you don't have to risk damaging the tube by trying to remove it -I doubt it's detachable anyway. There's hardly any crap that can remain after an onslaught like that.

CaptDan

[zeolig]

Thanks Let the soaking begin. gz

[xsh0rty]

wait ru trying to remove the tube w/ holes in it that is under your main jet? u have to take off ur air idle screw thingie for it to fall out

[Kenny_McCormic]

The idle jet is only suposed to pass a pinprick of light.

[zeolig]

Thanks to everyone for their help.I never did get air to pass through it but I was able to het the tube and remove it with a vise grip. I then cleaned it out and pressed it back in. I will put the carb back on, make some adjustments and hope that it idles. I am assuming that the barrel on the throttle cable slot side goes over the little bead sticking out, It does on the puch maxi's. zmaan

[zeolig]

Well. I got it to idle and I took it around the yard. Never new how much pep these little guys have but I am still adjusting the idle through the mix screw and sometimes I get a runaway idle? It has more take off when I open the air mix screw out a bit but it also increases the idle, I ordered another vacum petcock so I have been running it with the bystarter and vacum fitting closed. A direct feed of gas. maybe that is my problem and will be cleared up when the new petcock comes. Also is there a tiny little spring in the bystarter about the size of a ball point pen spring. I thought I saw one but cannot find it now. Any Ideas . Thanks again, Zeolig

[CaptDan]

Also is there a tiny little spring in the bystarter about the size of a ball point pen spring. I thought I saw one but cannot find it now. Any Ideas . Thanks again, Zeolig

When I pulled out the bystarter on my bike I saw that same tiny spring. I have NO idea where it goes. It's not pictured in the 'Bystarter' tech article on this forum. I lost it too, and forgot about it.

It appeared my bystarter was dead and I replaced it. The new unit didn't come with that small spring. And the bike does NOT run correctly without some gerry-rigged bushing inside the bystarter port along with the bystarter.

Additionally, I've studied the exploded drawings of the NQ50 (Spree) carb on parts websites. NO spring is depicted ANYWHERE in those pix.

Does ANYONE know if this spring fits into the bystarter port? Wha's UP with this anyway?

CaptDan

[Clivester]

Additionally, I've studied the exploded drawings of the NQ50 (Spree) carb on parts websites. NO spring is depicted ANYWHERE in those pix.
CaptDan

There is no spring that goes directly into the bystarter port as far as I'm aware. However, if you dismantle the bystarter assembly itself (which Honda intends that you will not do) by removing the needle and barrel, you will get to 2 springs whose functions are to cushion the needle when it expands into the port and ensure that the tip moves out as the bystarter body expands.

See this link:

http://www.scootertherapy.com/nqchokepage.html

Clive.

[zeolig]

I just inserted the needle and connected it back up . It seems ok. zeolig

[CaptDan]

Additionally, I've studied the exploded drawings of the NQ50 (Spree) carb on parts websites. NO spring is depicted ANYWHERE in those pix.
CaptDan

There is no spring that goes directly into the bystarter port as far as I'm aware. However, if you dismantle the bystarter assembly itself (which Honda intends that you will not do) by removing the needle and barrel, you will get to 2 springs whose functions are to cushion the needle when it expands into the port and ensure that the tip moves out as the bystarter body expands.

See this link:

http://www.scootertherapy.com/nqchokepage.html
Clive.

I've studied that pix before and I'm still confused.

The spring depicted is a larger one than the tiny 'ballpoint' pen unit which I don't see. The one in the pix is virtually the length and diameter of the barrel. When I diassembled the old bystarter I saw that spring, but the 'ballpoint pen' dealy was stuck in the port when I first yanked it. The entire unit was buggered and I assumed it just fell apart.

I'm probably making a bigger deal about this than necessary, but both that link and the Bystarter Service Tech article don't feature the 'mini-spring.'

CaptDan

[Clivester]

Dan: The nearest thing to your description would be the spring on the air screw. Could it have been that or do you already have one there?

If there was a spring inside the bystarter port ahead of the needle, it would likely defeat the operation of the bystarter. Maybe the PO added it to keep the bike running rich all the time because of another problem. You could test the operation of the bystarter most directly by trying to pull a vacuum on the bystarter inlet hole right on the mouth of the carb after its fully warmed up.

I think you said you had to make a sleeve for your NEW bystarter before the scooter would run decently. Could be that's defeating its operation too.

Clive.

[Clivester]

Also is there a tiny little spring in the bystarter about the size of a ball point pen spring. I thought I saw one but cannot find it now. Any Ideas . Thanks again, Zeolig

Same question for you too Zeolig. Could it be the spring for the air screw - should also be a tiny washer and o-ring.

Clive.