Gas and carb issue

Here is the issue. I have a Kawasaki vn800a. It was leaking gas out
the carb into the air box. This started to happen after switched to
reserve one day and than filled up. I took it to the shop they fixed
the float and than prob started again (about 80 miles after the shop
fixed it). Took it back to shop they said it was now the seat with a
slight tear and the whole carb needed to be replaced. They fixed it
(said they would only charge me if the problem was fixed.) Well about
200 miles later the problem is back. When the gas is getting shot into
the air box it is from the carb. The bike runs crappy and will stall
at lower RPMs when I am not running it with the throttle open. It runs
loud and rich at this point. I opened the petcock and everything seems
fine there. In the gas tank there is some rust, but not a ton. What
the heck is causing my prob. Is it something before the clutch (fuel
line/rust/tank/petcock) or is it something after the clutch
(spark/mixture/something else) It most like is not the clutch since
that is a new one and it is still causing the issue. PLEASE HELP ME.

 

This stuff (POR-15) is a really good tank liner if you follow
their directions carefully.

http://www.por15direct.com/s.nl/it.A/id.1516/.f?sc=2&category=172

Also does a good job sealing pinhole leaks. Only caveat is that
it attacks aluminum. When I did the job, I'd put a cut open soda
can under the petcock to catch drips and the sucker ate right
through it. Definitely take off the petcocks.

On an older gravity feed system, I'd also put in an in-line fuel
filter. Not sure about this on a vacuum operated petcock but
I'd guess it'd still be OK.

I'm a little surprised that they replaced the whole carb even
if you had a bad float seat. Seems like they could have
repaired the old carb.

 

The rust. In the short term, put a filter on the fuel line. In the long
term, POR-15 the tank.

http://www.por15.com/

 

OK, that's the symptom of a stuck float valve, floats improperly set,
or crud on the float valve or the float valve seat.

Yeah, I never use the reserve setting on a motorcycle except in
emergencies when I stupidly forget to fill the gas tank. All the water
and rust and crud collect in the bottom of the gas tank, and when you
turn the petcock to reserve, all the crud goes down to the carburetors
and sets on top of the float valve.

You need to find an honest mechanic and sue that $tealer$hip for
cheating you.

The float valve seat cannot get torn, it's made of brass. The float
valve probably has a rubber tip, but, if you look up the carburetor
parts diagram on www.partsfish.com you'll see that the float valve
probably costs less than $5.00

The idle jet and idle ports are plugged up by the crud in the carbs,
but the gasoline level in the float bowls is too high, making the
engine run rough and rich.

What I said. Dirty carbs. Stuck float valve. Floats set too high.

Crud in the carburetors.

Your head is all messed up on this before the clutch and after the
clutch shit.
It has nothing whatever to do with the clutch.

Clean out the gas tank, clean out the petcock, clean out the
carburetors. Find a mechanic that knows shit from Shinola without
tasting it.