webber help needed

[Anonymous]

right here goes got my webber on now conversion plate made up linkage sorted running like a dream then disaster strikes floored it in first through second into third then it died on me it wont idle just cuts out i have to keep popping the throttle above 3000 revs to keep it going even then it will die and cut out was at my sisters when this started and had to drive home popping the throttle as i said driove it 200 yards or so then whoosh it kicked in and i was flying again drove another 400 yards and back to death it went managed to keep it going 3000 revs again then another few hundred yards and woosh ok again and i made it home after that this is the second time in two days this has happened so whats wrong cheers in advance X-(

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[Anonymous]

its sucking air on the manifold joint just below the carb. its needs to be a good seal or it WILL NOT idle!!

[Anonymous]

fuel pipes how are they connected???

if u used a t - piece for the return u may not be filling the carb bowl up

try closing the return pipe up while cranking over to make sure u got enuf fuel in...


or u could be flooding it...

[Anonymous]

its been runnning fine all day except for these two problems as for the seal dicko its well sealed up it does idle ok only happened twice, i had booted it just before each cut out i aint used the return rgv stu could not see anyway to connect it so left it off.i have been told tonight it might be the float setting or something like that so whats the setting and how do i set it?????? is this what u mean rgv stu by "flooding it"....

is it worth the grief i wonder

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[Anonymous]

yup

the weber instructions tell u to cut the inlet pipe 50mm after the puel pump and fit a t -piece so it looks like the fuel goes through it straight and the spur is the return (get me?)

the needle valve in the carb is connected by the float if u have too much fuel pressure then the valve wont work properly and too much will be fed into the carb causing it to flood.

the excess pressure from the pump will now be t-ed off into the return pie while still fillin the carb

so it looks like

pump----->>>>>>---------------->>>> carb
|
|
return---<<<<--------|


do i make sence??

[Anonymous]

pic not as i wanted it

return come down between pump and carb

[Anonymous]

cheers stu will try it tomorrow as the prob is getting worse will only run with the choke fully out and at 3000 revs that tells me not enough fuel will see what happens tomorrow thanks again m8

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[Anonymous]

sound like hard work then fitting these carb's!?
Is this the case?

[Anonymous]

not really mate

[Anonymous]

It might be that the carb is on the way out.

When I first fitted my Webber it would run fine, then suddenly not run, then run, then not, then rev to high revs....basically the same as you described above.

All I did was get a re-con kit (?28) and gave it all a good clean out at the same time, and it was perfect from then on.

At idle, does it rev ok?

I'm asking 'cos in my case, it refused to rev over 2500rpm.....any higher, and it would start to cough and splutter then die, unless I lifted off the gas.

[Anonymous]

finally sorted thanks for the help guys the tip about the return pipe was the trick (cheers stu) it will idle perfect now and the throttle is very responsive total cost is 15 quid for the carb

total headaches loads ;)

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[Anonymous]

Nice one Keith...looks like you were luckier with your ?15 Weber than I was with my ?15 Weber!

[Anonymous]

:D :D well chuffed rich :D :D

http://uk.briefcase.yahoo.com/kf139

[Anonymous]

They are nice aren't they.....I love my GTE but I do miss the sound of the Weber :(