VW what car?
what year>?
no model, no year,
no joy.
are these custom carbs? if yes, NO ONE CAN answer that.
because.
Jets are tuned for YOUR engine alone.
if all this is true,then get the weber book, huh? and read it.
it tells you how to tune any weber, and its not simple. not at all
the webers are the most difficult to tune but on the other hand they are the best. (less compromise , makes great racing carbs).
there are on line weber tunning pages, why not google that.
in the old days, we'd use spark plug readings for full week end (wasted ) to tune any custom carb,,
fast forward, 21st century, we have nice wide bad 0xy sensor tool.
its about, $150 now.
we put a 02 exhaust bug on the exhaust headers, (both if v8)
and we tune the carb. using this tool , in about 1hour.
way less for only idle , idle is very simple NO ENGINE LOAD.
I set it to stoich and drive.
end story, unless , issues driving or up hills.
on stock carbs the idle has a mixture screw.
we set it to max RPM and the unscrew 1/2 turn (rich)
not all carbs some use an air screw. (backwards)
contrats, the most complex question ever asked on fixya.
ever.
join a car forum for your car, then find custom carb section
then ask there. bingo,, must maybe 1 other person did this.
but i can tell you if the engine is different , with custom exhaust
all the tuning must be done over.
eg: custom cam, milled heads, exhaust, bored cylinders. or ported inakes. all change DEMAND for fuel and must be tuned to match it.
same is true with EFI. (speed density) but not air density EFI.
see.... ?
SOURCE: How to remove idle jet?
The idle jet is located in the bottom of the car. it's the recessed one in the bottom of the body. Remove your air cleaner assembly. remove the four screws. Be careful because it will be full of gas. ( well vented area.) You'll have one jet sticking out. That's your main. right next to it is a recessed jet . That is your idle. you'll have to use a small flathead screw driver to get it out. Make sure you have god pressure on the jet to break it loose. The jet itself is brass, and you don't want to mess it up. You should probably have a 45 jet with your combo. if you've been messing with the mixture screw it should be set around 1 & 1/2 turns out from lightly seated.
I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_5bac37c3cb991fdb
SOURCE: Yamaha SR185 1981 carb settings
Righhttt And I need some new brain cells, stock jet size is .075 float level in 17/64ths turn adjustnebt screws in till they bottom out lightly then turn one and a half turns out andthat should get it to run, otherwise go to the nearest library and check out the book for that modle. there is another adjustment for the venturi plates but don't remember the exact proceedure.
SOURCE: engine cuting out just brought
what kind of ktm is it do you know the year is it two stroke or four. please inform me of the missing info and i'll be happy to help
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