Barn Find motorized Bicycle...very old NT carb (i'm guessing)

[ShawnTheWeirdo]

So i got an old motorized bicycle out of a barn, from what i was told it was sitting with the engine disassembled for around 10 years, was missing so many nuts and bolts and other stuff, but eventually got it running, which was a feat in itself, because i have Zero knowledge about engines, in fact this is my first motorized vehicle of ANY kind, haven't sat behind a motor in like 25 years and that was a ride-on lawnmower... anyway, i seem to either be clueless or I'm doing something wrong with the idle on the bike, it doesn't idle, if i bring it to a stop, i just dies, doesn't take much to get it to start up again, but i also feel my fuel ratio is too high, carb seems to be wet.

Anyway, instead of a tickler/primer button next to the idle adjustment screw i seem to have another screw, and I'm not 100% sure what it does, other issue i have is when i pull the clutch, engine revs very high, which i think has something to do with the assembly inside the carb if i remember correctly from the other posts on here, so i know i'll need to take a look at that

 

[DAMIEN1307]

The first thing I would do is just junk that 10 year old carburetor since it is probably more trouble than what it is worth after 10 years of sitting around.

Replace it with this JRL BoFeng for a whole $11.99 USD...lol...lol.

Be aware this is a USA link to Amazon, not a Canadian .ca URL link
https://www.amazon.com/JRL-Carburetor-Stroke-Motorized-Bicycle/dp/B08N9WYS1V

I found the amazon.ca Canadian link for you.

Amazon.ca

 

[DAMIEN1307]

Anyway, instead of a tickler/primer button next to the idle adjustment screw i seem to have another screw,

Nope...Thats just what is left of the 10 year old tickler is all.

The JRL BoFeng I just showed ya on the other post has no tickler to be leaking on you as our bikes really dont' need one of these to begin with.

 

[DAMIEN1307]

So i got an old motorized bicycle out of a barn,

Ps...Noticed your from "Novie"...lol...My relatives on my fathers mother, side of the family, (My grandmother), were all from Hamilton and surrounding area of Nova Scotia...lol...The Cummings family name, They moved to Boston over 100 yrs ago where I also am originally from...I used to like to go over once in a while on the Scotia Prince...I miss those days.

 

[meridianPeteJ]

My hats off to you for getting that old motor put back together and running

 

[cloakedvillain]

I would pull the top and check for corrosion on the inside of the engine. If the connecting rod is more rust than steel or the bearings are seized its liable to be a lost cause.

 

[ShawnTheWeirdo]

Nope...Thats just what is left of the 10 year old tickler is all.

It's a screw though, isn't the tickler a button you can push?

I would pull the top and check for corrosion on the inside of the engine. If the connecting rod is more rust than steel or the bearings are seized its liable to be a lost cause.

Engine seems to run fine, i've taken it for a short cruise around town, it's just running very wet, has no idle and moves even with 0 throttle, lol

 

[Chainlube]

The first thing I would do is just junk that 10 year old carburetor since it is probably more trouble than what it is worth after 10 years of sitting around.

Replace it with this JRL BoFeng for a whole $11.99 USD...lol...lol.

Be aware this is a USA link to Amazon, not a Canadian .ca URL link
https://www.amazon.com/JRL-Carburetor-Stroke-Motorized-Bicycle/dp/B08N9WYS1V

I found the amazon.ca Canadian link for you.

Amazon.ca

Nope, don't do that.

Nope...Thats just what is left of the 10 year old tickler is all.

Nope, that's an idle mixture adjustment screw. I see the spring that keeps it in place.

Get a spray bottle with some water in it and when it revs high, squirt the intake connections between the carb and cylinder. If it stalls, you have an air leak.

Did you look inside the carb before you installed? The slide should go almost to the very bottom of the throat, maybe a 1mm or 2 gap.

 

[ShawnTheWeirdo]

i did, but it was when i first got the bike in like January, and i forget what it looked like inside other than clean, i need to take the whole engine off the frame to get the carb off, so i'll take a poke at it when my wrists aren't sore from riding the bike (i really need to raise the handlebars i think, lol)

as for the bike moving with 0 throttle once i kick the engine on, is that normal? i assume it's not

 

[Chainlube]

as for the bike moving with 0 throttle once i kick the engine on, is that normal? i assume it's not

Nope, shouldn't move.

I think you can take the carb off without removing the engine from the bike. Loosen the carb to intake clamp, turn the carb 90*, then take out the two screws that hold on the air filter.