Again more carb questions

Hi i have a 1996 VFR750, and am looking for some tips and parts. I bought the bike last year it had been sitting in a barn for several years with just under 7000 miles on it.
I got it running, put new rubber on it and changed all the fluids, filters & plugs.
Last season i tried to drive the varnish out of the jets using several different fuel system cleaners. Seafoam worked a little, I did put just over 2000 miles on it last year with cleaner in every tank of premium fuel.
So i don't know what forum to go to and ask about jet cleaning. The bike runs fine at idle, though it does not seem that the choke is very effective, through just under 4k (it is weak right on the edge of gasping for fuel in the lower revs) then it goes flat until it finds 7k and then pulls like a mule until redline. So i am missing the meat of the powerband. Can i pull the carbs and use spray carb cleaner in the jets and be effective? Or will i need to pull the jets and clean them along with flushing the carb bodys?
Any tips or ideas would be appreciated. I am hoping to do this without separating the carbs. Make some choke & throttle cable adjustments and resync carbs.


Also i would like to find a new aftermarket windscreen for it. The original is scratched , cloudy and looks like hell. Any tips on where i can find one, opinions on double bubble & touring screens would be appreciated.

Thanks for any and all help, Kirk

 

Sorry I can't help out, but there are a lot of guys on this forum very familiar with your model and year bike.

I'm sure once they see this thread you'll start getting some answers.

 

Thanks for the post GURU

 

Hmmm, do I detect sarcasm? A guru that doesn't know shit about your bike? Interesting...

Either way, the mere fact that I'm responding is bumping your thread and keeping it at the top of the newest posts. Have patience, grasshopper.

 

Man all you guys rock it with the help!

 

...Pliskin with a can of carb cleaner.

Sorry, buddy. Couldn't resist :smile:

 

You're best bet is to take the carb off and to a total cleaning. Invest in a K&L carb cleaning wire set, it's perfect for poking thru all of the air and fuel jets. The VFR carbs seem more involved than most carbs I've worked on. Depending on how thorough you want to get, you can start with removing the float bowls and cleaning the main and starter jets (soak in carb cleaner), emulsion tubes and the non removal pick up tube. I'd check the float levels and replace the 'valves' as needed. And I'd just replace the seals for the float bowls as well.

I'd also clean the slides/diaphrams (top part) don't use carb cleaner on them. And as you open the butterfly valves there's several small orifices that you should poke at with the K&L wire set too. Don't be shy with the carb cleaner either.

The air cut off valves, choke systems, and replacing the fuel lines would be optional/as needed.

And while you have them off, check all of the vacuum connections and carb intake holders for leaks/cracks. And I generally will sync them as I re-install them.

If you haven't cleaned a set of carbs before, keep your computer handy, get a service or carb service manual and by about the third time you take the carbs off, you'll finally get 'em right!

check out the carb help files. gives you some nice general back ground and info

Carb Help Files

Good luck

 

how about compressed air? if you dont have an air compressor, maybe its time to invest in one/or some canned air? Air is your best friend after a quality carburetor cleaner (berryman) shameless plug, wut can me say,.

Sounds like your slides arent lifting since your mid-range is suffering, was the bike ever fingered by the previous owner? I like virgin motorcycles as I hate inheriting other peoples mistakes

Flip side, Human Virgins are lousy, some miles on them is far betta!!!! IMHO...gud luck and have fun fer gawds sake!