78e carbs not fueling 3-4

[MrWheelie]

ive got the carbs clean, 3 and 4 are not getting fuel at idle, bowls appear to have the same amount of gas when I turn them over and drain them, not sure what to do now

[bikerphil]

Make sure the tips of the idle mixture screws aren't broken off and stuck in the carb throats. The early style carbs are prone to that if they are seated too tight.

[cywelchjr]

Did you make sure the idle mixture needles were not broken off in the ports? That's a not uncommon problem with those carbs if you crank down too hard on them when setting them (you gotta be really gentle with them), and if they do you can have a really hard time fixing it.

Sorry apparently Phil was typing pretty much the same question as I was and saved just before I did.

[MrWheelie]

those are the 4 adjustment screws next to the intake boots? I never messed with them, I can check tomorrow

[MrWheelie]

if they were broke off inside would the adjusters still be attached?

[cywelchjr]

those are the 4 adjustment screws next to the intake boots? I never messed with them, I can check tomorrow

It's also possible if you have done nothing with them that they are plugged. Part of the cleaning process is to remove them and make sure all the passages related to them are clear, as they can easily get clogged.

[cywelchjr]

if they were broke off inside would the adjusters still be attached?

Yes, they would. You have remove them and check that the tip is not stuck in the hole. You should remove them to clean the passages involve with them anyways.

[MrWheelie]

It's also possible if you have done nothing with them that they are plugged. Part of the cleaning process is to remove them and make sure all the passages related to them are clear, as they can easily get clogged.

how do I remove them?

[cywelchjr]

how do I remove them?

Just unscrew them. First very gently turn them in till they just stop, and count how many turns and partial turns it takes, write that down for each carb. Then take them all the way out. If the tips are still there then clean out the passages with carb cleaner and gently screw them back in till they just seat and then back out the number of turns you recorded for each one.

[MrWheelie]

Just unscrew them. First very gently turn them in till they just stop, and count how many turns and partial turns it takes, write that down for each carb. Then take them all the way out. If the tips are still there then clean out the passages with carb cleaner and gently screw them back in till they just seat and then back out the number of turns you recorded for each one.

do the plastic caps just pull off?

[cywelchjr]

do the plastic caps just pull off?

Yes, they just pull off, and have to come off to remove them. Here is a link to one of the tech articles on cleaning the carbs.

There is also an article on getting the broken tips out if they have broken off, just look under the xs11 info and tech tips under repairs and it's there.

[MrWheelie]

pulled the carbs, removed the air adjusters, I blew air through the holes, not stopped up, and the tips are not broken

[bikerphil]

When you cleaned your carbs, did you remove the pilot jets and clean out their passageways? They are under the flat head screw in the bowl next to the float valve.

[XSokieSPECIAL]

Air WILL still blow through the holes because they go back into the jets.

The tips break off where the fuel dumps from THAT passage into the venturie.

Were the needle ends blunt or sharp? A healthy idle screw is almost as sharp as a sewing needle.

[MrWheelie]

When you cleaned your carbs, did you remove the pilot jets and clean out their passageways? They are under the flat head screw in the bowl next to the float valve.

yes, pilot jets are clean, I can cover the back of the carb with my hand and there isnt any effect, rev it and it has vacuum