carb

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Alfabud
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carb

Postby Alfabud » Fri Jun 09, 2017 5:36 pm

hi
Fuel is flowing out my carb where the float hole is as soon as I turn fuel on.....I have cleaned it blew air through it changed gaskets...nope.. still wont stop leaking
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Charles uk
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Re: carb

Postby Charles uk » Fri Jun 09, 2017 5:39 pm

Needle valve not sealing properly!

Check & clean.
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Alfabud
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Re: carb

Postby Alfabud » Fri Jun 09, 2017 8:25 pm

Is that the very small valve in the float chamber under the thin brass plate that is loosely attached to brass bit that the float goes on to
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tambikeboy
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Re: carb

Postby tambikeboy » Fri Jun 09, 2017 8:35 pm

Yip that's it it should move freely just turn it upside down and it should move. When the carb bowl fills up the float will connect with the valve and shut it of...
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Alfabud
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Re: carb

Postby Alfabud » Sat Jun 10, 2017 11:23 am

thx
am going to look at it today...just hope its not broke...I moved it up with a screwdriver and it did move...so thought it was ok...so I sort of ruled that out...but I will take it off and have a look..
thx again
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Alfabud
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Re: carb

Postby Alfabud » Sat Jun 10, 2017 5:30 pm

really cant get into the needle without bending the thin brass plate dunno if that's a good idea...I put w d all over the needle but to no avail..does the needle come out.
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tambikeboy
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Re: carb

Postby tambikeboy » Sat Jun 10, 2017 5:59 pm

If the needle is moving in and out then it should be fine to leave alone but if you want the needle out then you have 2 options either take out centre jet or remove the small screw that holds the the flat brass part your talking about its just like a small self tapper.....I'd use long nosed pliers hope this helps
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tambikeboy
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Re: carb

Postby tambikeboy » Sat Jun 10, 2017 6:19 pm

2 more pics 8)
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Charles uk
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Re: carb

Postby Charles uk » Sat Jun 10, 2017 6:20 pm

Magic Tam!
If you use the correct sized spanner on the Jet, the chances are you will just remove the jet from the centre piece, if I remember right to remove the centre piece you have to remove the small screw in the throttle slide body then remove the top cap, throttle slide & needle & screw the centre piece further into the carb body & it will unscrew into where the throttle slide resides, the brass plate that hold the needle in place will swing out of the way, releasing the needle. Don't loose the washer!

Correct me if I've missed anything Tam, it's years since I serviced a Villiers carb.
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tambikeboy
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Re: carb

Postby tambikeboy » Sat Jun 10, 2017 6:27 pm

Spot on C i forgot to mention that wee screw at side of carb body thanks :lol:
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Alfabud
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Re: carb

Postby Alfabud » Sat Jun 10, 2017 7:42 pm

that brass jet in the centre does that just unscrew
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tambikeboy
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Re: carb

Postby tambikeboy » Sat Jun 10, 2017 8:17 pm

Remember and undo the small screw on the side of carb body the centre jet will most certainly be stiff i tend to put the float bowl nut back on and apply gentle taps and that should free it...hope this helps
DO NOT TRY UNSCREWING IT'S NOT THREADED
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Charles uk
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Re: carb

Postby Charles uk » Sat Jun 10, 2017 8:25 pm

Thanks for that Tam I thought it was threaded, it obviously isn't!

Told you I needed correcting!
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tambikeboy
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Location: Scotland

Re: carb

Postby tambikeboy » Sat Jun 10, 2017 8:38 pm

Me to I'd forgotten about the wee carb body screw i think that's how most of them have the nut at the top chewed up. ...
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tambikeboy
Posts: 562
Joined: Sat Oct 29, 2016 2:01 pm
Location: Scotland

Re: carb

Postby tambikeboy » Sat Jun 10, 2017 9:23 pm

:lol: Just a thought make sure your float is moving freely simple test is to shake carb and you'll hear it moving also make sure float is not punchured and that it floats easy test just hold it under water and let it go (far out but you never know)....
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