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+--- Thread: Carburettor Float drain screw.(solved) (/showthread.php?tid=78273)
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Re: Carburettor Float drain screw. - BBROWN1664 - 14-06-17
The problem is most likely to be right below the tank.
When you lift the tank it pulls them up slightly from behind the carbs/gearbox. When you lower the tank again, they don't fall back via gravity and the excess gets kinked under the tank.
Simply grab the pipe where its behind the tank and pull down on it gently as you lower the tank. Job done.
Re: Carburettor Float drain screw. - funguy86 - 16-06-17
Ive done this yesterday and no change. I also noticed that blowing down the pipe that goes to the cap drain plug results in air coming out the other side. Can't say the same for the tank breather. Could it be possible that it is blocked inside the tank?
Re: Carburettor Float drain screw. - darrsi - 16-06-17
(16-06-17, 02:40 PM)funguy86 link Wrote: Ive done this yesterday and no change. I also noticed that blowing down the pipe that goes to the cap drain plug results in air coming out the other side. Can't say the same for the tank breather. Could it be possible that it is blocked inside the tank?
Can't you just blow air upwards instead from the pipes?
If it was blocked the likely culprit would be rust.
Re: Carburettor Float drain screw. - funguy86 - 16-06-17
That is exactly what I tried. It seems it would take quite some pressure to force the air through.
Re: Carburettor Float drain screw. - darrsi - 16-06-17
(16-06-17, 03:08 PM)funguy86 link Wrote: That is exactly what I tried. It seems it would take quite some pressure to force the air through.
The air should flow freely, i did exactly the same trick with mine and there was no resistance at all.
Re: Carburettor Float drain screw. - funguy86 - 16-06-17
Mmmmm this sounds like a trip to the garage then...
Is there anything else I could try?
Re: Carburettor Float drain screw. - darrsi - 16-06-17
Other than poking some form of wire into it, i have no idea what to use though?
And the downside is that if it is rust you run the risk of puncturing the pipe, then it's game over anyway.
Silly question,but is the cap open when you blow air up the pipes?
Re: Carburettor Float drain screw. - darrsi - 16-06-17
What about the cap itself, you could always soak that in some warm/hot water to clear any built up crud?
I just changed mine for a shiny new one, it meant a new key but that was no problem.
Re: Carburettor Float drain screw. - funguy86 - 16-06-17
I tried it with cap open and closed. Poked a coat hanger wire up there but I only got about an inch in before I hit metal. I guess I need something more flexible??
Re: Carburettor Float drain screw. - darrsi - 16-06-17
You need something like the middle of tv aerial cable.
Re: Carburettor Float drain screw. - funguy86 - 16-06-17
Haha do you know where I can get that ?
What about pipe cleaners?
Re: Carburettor Float drain screw. - darrsi - 16-06-17
(16-06-17, 05:36 PM)funguy86 link Wrote: Haha do you know where I can get that ?
What about pipe cleaners?
Any house with an aerial :lol
If you can find a pipe cleaner about 18 inches long then yeah, but i doubt it.
Re: Carburettor Float drain screw. - darrsi - 16-06-17
Thinking about it though, you'd have fun and games stripping the wire out of an aerial cable in one piece.
Re: Carburettor Float drain screw. - funguy86 - 16-06-17
Definitely a garage job by the sound of it ?
Re: Carburettor Float drain screw. - funguy86 - 16-06-17
Oh a colleague just recommended one of those fuel additives. Might try that before I spend garage labour rates
Re: Carburettor Float drain screw. - darrsi - 16-06-17
(16-06-17, 06:29 PM)funguy86 link Wrote: Oh a colleague just recommended one of those fuel additives. Might try that before I spend garage labour rates
Fuel additive won't do anything as far as this is concerned.
Re: Carburettor Float drain screw. - funguy86 - 16-06-17
So the wire is my last resort then ?
Re: Carburettor Float drain screw. - darrsi - 16-06-17
I personally can't see any other option to clear it.
I've heard of those metal pipes internally corroding before and as far as i can tell it would mean another tank.
Re: Carburettor Float drain screw. - funguy86 - 04-07-17
Update: I took it to the garage and it turned out to be the immobiliser causing the problem. Weird huh?
Running really well now. Perhaps Il be able to save for those shiny stainless downpipes ?