Will not take throttle

I have a 1995 vfr that sat over the winter! I took the carburetors off in the spring and gave them a good cleaning. When i reinstalled the carbs the bike idles great but will not take throttle. Now after taking them off a number of times checking the floats, jets etc.and reinstalling same result! Will not take throttle. It bogs down like its starving for gas.

I'm lost as a ball in tall weeds!

 

Tinki could have the answer: It's not always easy to get the vaccum diaphrams seated correctly, so check that you feel slow resistance and listen for a "whooooosh" sound as you push the slides up with a finger.

You say the bike idles fine or i'd suggest a possible blocked fuel filter or bad fuel pump.

 

Check each slide for pin holes in the rubber diaphragms. Bike will idle fine but not take throttle in that condition. Just my $.02

 

My money is on clogged pilot circuit

Does it idle with the choke on? How about without the choke?

Did you pull out the mixture screw and clean back into the transfer ports of the pilot circuit? Is the pilot jet really open--it's very tiny (0.015" diameter) and usually needs to be rodded out with a small wire or #79 drill bit.

It is starved for fuel because the transfer ports aren't flowing any fuel from the pilot jet circuit, so it's either clogged pilots, transfer ports or mixture screw port.

How far can you slowly twist the throttle until it dies?

Carburetor cleaning:
http://huntsville.craigslist.org/cys/2573045490.html

 

tinker - thanks for your reply! Yes the slides move freely and the choke has no effect.

 

I cleand the carbs with just clean in can!
We ain't that high tech in south carolina.

 

Tink, yes since i have owned the bike summer or winter it always require choke on the first startup. I feel sure the choke is working!

 

Sweet mother of acceleration. You given me a lot for my little pea brain to consider and i appreciate it very much! Thank you for your time.
It will not take trottle on the stand! Yes this is a new problem! I failed to use a gas stabilzer and this spring the carbs were so gumbed up you could not turn the throttle.

 

[REDROD, em ail me at:
the_tomato_man@verizon.net
I can get you going. Its too long to print here. or call.
fouronetwosevensixsevenzerothreetwothree
Ed in Pittsburgh Pa.
96 VFR750

 

thanks you guys for all the suggestions! I'll try then this weekend if it cools off a little! It's been 100+ everyday for two weeks!

Thanks again!!

 

tinker,
i had a guy close that looked at carbs and verify my work . He confirms the jets are clean. Do you think the second path of the pilot jet could still be clogged? If so how to access? I'll check the diaphragms for any pin holes when i go back in!
To answer some of your questions. No it's not a california bike, sometimes if i gradually apply throttle it will rev up. All this happens on center stand, no problems before carb cleaning just let sit to long.
I did locate tocutter thread and it should be helpful. But it appeared very similar to initial cleaning!

 

TINKER
Let me give you an update and ask for more advise!
I removed the carbs again really gave them a meticulous cleaning. I checked the diaphragms for any pin holes all good! Reinstalled on bike and tried to start with choke on "nothing". So sprayed some starter fluid an it fired up at about 5000 rpms.
I quickly grabbed the throttle and it maintained rpm even increasing to about 8000.
After a few minutes I began to drop rpm and at about 1500 it died! I was able to recreate same procedure with the same results!

 

Should the pilot screw be screwed all the way in? To clean should i remove pilot screw and blow air through?