6 replies to this topic

[mike.]

Theres a small pipe that goes from the little pot next to the carb, to the small metal pipe above the clutch.

I'm asking because my mini has a small piece of really loose fitting tube going between the 2; its not held on by anything, just pushed onto the pipes. Its so loose fitting that when i started my car today for the first time in a while, once the engine was up to running temp, fuel starting dripping out of it, because it wasn't flowing down the pipe. Being directly above the exhaust manifold it could of easily ignited!

I'm just doing checking before i clip it all into place properly - that it is infact some sort of fuel overflow for the carb?

[mk1leg]

Hi..!.. yes it is an overflow and it should run via a pipe to front of engine, check float chamber for dirt and float itself and clean shut off valve................

[blue redtop]

petrol wont ignite with out a spark tho so dont panic.

change the pipe and put some jubile clips on there

[mike.]

So what causes it to overflow anyway?

[mini_kel]

As mk1leg said,Check float chamber it`s probably the valve sticking

[Surfbluegarage]

if its a hs carb(which i take it it is seen as u sed pot on the side) then thats the float chamber.. theres a float at the top of this chambers the once full.. should stop more fuel being allowed in... but.. the needle above the float can easily get cloged with dirt and bits of C**p from the fuel line... take the fuel line off the top of the pot undo the 3 screws take the top off and knock out the small metal pin that holds the float to the lid... then get a small socket.. i think its sumthin like 7-8 mm and undo the needle casing at the side.. take it to bits and clean it out then reasemble.. tis easy..

my twins kept overflowing and i changed the needles in the both 2 times each so instead of doin that every week i bought a filter king pressure regulator and ive not done it since..

[Dan]

petrol wont ignite with out a spark tho so dont panic.

Interesting idea. Ever tried it? A hot exhaust manifold could easily get hot enough to ignite petrol. How do you think glow plug enignes work? You've been watching that rubbish on Mythbusters I suppose? They got the fire triangle wrong (like lots of things), all you need is two reagents and the right temperature (which depends on the two reagents in question and the concentration, pressure and other factors). Sparks aren't magic, they only ignite things because they are hot.