Builds Weenie 3 - Bringing another 40 back from the dead

wngrog

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The float valve is stuck open, or misadjusted. The bowl became pressurized and it found its way out thru the main nozzle. Check your float height.

Edit, maybe the needle valve isn't installed.
My first thought is to bang on it with a hammer and hope what is stick will unstick.

If that does not work what’s the best plan of attack? I don’t dissect carburetors....
 

Dizzy

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I was going to say, check the crankcase for fuel vapor. I've heard of a pop in there to loose an oil pan. Likewise for exhaust spark, and a potential hole in the muffler.

I'd take that carb apart, but that is just me.
 

wngrog

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I was going to say, check the crankcase for fuel vapor. I've heard of a pop in there to loose an oil pan. Likewise for exhaust spark, and a potential hole in the muffler.

I'd take that carb apart, but that is just me.
Yes. I’ll pull the plugs and spin the motor and clear all that gas before I do anything else.

Being a new carburetor, surely it’s just a stuck float.
 

Racer65

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What happens sometimes is that during transport, the boxes are flipped upside down and put in that position for a period of time. As a result, the float or needle valve can get stuck. A light tap with a rubber hammer may or may not do the trick.

Even though a carb can feel like an intimidating black box, the top part of the carb (the air horn) is quite simple to open up. Basically, remove the screws you can see from the top, and the entire air horn can be lifted up. That will give you access to the float and needle valve. It takes literally 10 minutes. The accelerator pump (#3) is a frequently serviced item on old carbs, so every Cruiser owner should try opening up the air horn at least once. Do this on a table with a piece of cloth underneath.

IMG_4426.jpg
 

subzali

 
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There’s about 8 small screws holding the top part of the carb on, and maybe a small clip holding a rod or something. Carefully take them out and pull the top of the carb off. Be careful not to tear the gasket. The float will come with the top of the carb and you can make sure it’s not stuck.
 

wngrog

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What happens sometimes is that during transport, the boxes are flipped upside down and put in that position for a period of time. As a result, the float or needle valve can get stuck. A light tap with a rubber hammer may or may not do the trick.

Even though a carb can feel like an intimidating black box, the top part of the carb (the air horn) is quite simple to open up. Basically, remove the screws you can see from the top, and the entire air horn can be lifted up. That will give you access to the float and needle valve. It takes literally 10 minutes. The accelerator pump (#3) is a frequently serviced item on old carbs, so every Cruiser owner should try opening up the air horn at least once. Do this on a table with a piece of cloth underneath.

View attachment 2121448
Thank you sir. I’m hoping it’s a hammer tap but with my luck I’ll be learning about an air horn.

Either way, thanks for chiming and thanks for the great products. I bolted a lot of City Racer on this old junk today.
 
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looks a lot like this one I had some years back. Great color. Wish I had kept it. But, if I kept 'em all I would probably be single. Hope the carb situation sorts out easily, they really aren't too complicated and I bet it is the stopper is stuck. Sometimes a few days with fuel exposure and a couple mallet taps will free it up. Cheers
 

Racer65

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Thank you sir. I’m hoping it’s a hammer tap but with my luck I’ll be learning about an air horn.

Either way, thanks for chiming and thanks for the great products. I bolted a lot of City Racer on this old junk today.
I'm not a carb rebuilder by any means. The reason I know my way around the air horn is because in California you can't run a desmogged carb. You either work with what you've got or you don't get to drive!
 

whitey45

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Very easy to pull the air horn, clearly from the video the needle and seat are not closing allowing the bowl to fill and overflow out of the float bowl vents. Check to make sure the float raises and lowers and when raised should close the needle in the seat. I usually blow on the fuel inlet while raising and lowering the float to check that it seats and unseats. You did dump a lot of fuel down it’s throat! Surprised it didn’t cough and try to run? Sure you have spark?
 

wngrog

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Very easy to pull the air horn, clearly from the video the needle and seat are not closing allowing the bowl to fill and overflow out of the float bowl vents. Check to make sure the float raises and lowers and when raised should close the needle in the seat. I usually blow on the fuel inlet while raising and lowering the float to check that it seats and unseats. You did dump a lot of fuel down it’s throat! Surprised it didn’t cough and try to run? Sure you have spark?
It coughed on the first video on the initial dump. Was too far flooded after that. I did check the spark since I was not 100% sure I picked the correct wire for the DUI
 

Dizzy

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I'm seeing a lack of oil coming from the rocker assembly. If I crank (on my slightly sloped driveway) with no valve cover it drains to the top back of the cylinder head and makes a big mess.
 

wngrog

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That’s why I have the cover off still. Once it gets going I’ll be able to make sure the oil pump is doing it’s thing. I’ve been doing a lot of motors lately and it seems like all of them oil differently. Some it’s obvious, some it’s a gentle flow. I’ve literally not been able to lay eyes on it trying to film and fight fires
 

FJBen

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lol...fond memories of helping my dad work on POS old snowmobiles back in the day. More ether, this POS will start....yeah it started, A FIRE BALL 🤣 I'm not sure if my dad ever figured out why we went through so much Ether and WD40 after that :lol: but GI Joe sure knew why.
 

cbmontgo

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You can also tell what's going on with your float if the sight glass is completely full. Should only be at the halfway mark if the float is set correctly (or isn't stuck). Definitely seems to be what's going on there.
 

wngrog

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Snuck home after work and spent a couple hours on Weenie 3.
First I pulled the plugs and spun the ignitiom to clear the fuel.
I took a hammer and tapped on the edge of the carburetor and hoped for the neet


I reprimed the fuel system and boom. 14 years after it was last registered and supposedly parked it came back the life.

 
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