kz650 bogging down after a few miles

Oh yeah it is dirty, and my tank was rusty too. It look like its a 1 way valve for fuel. I will need to clean it.

Where could I get another?

You have to search for part# 92037-1123

I found some for sale for $10 which seems like kind of a rip off, especially with $4 shipping (Like come on it could fit in an envelope) I made one out of a spring from a pen, would I be stupid to accept this as a solution? I don't really like doing janky things, considering the PO's janky things are what I am trying to resolve.

It does work, it rattles the same way the other one does, and the valve still works properly.

If it´s works for you give it a try and save some unnecessary money you have to pay for. thumbs up.

My gaskets looked healthy, so I'm leaving the old ones. I cleaned them up and put them back together. I put the carbs on, and then put on the rubber airbox hoses on from inside the airbox. I reached in where the lid goes and stuffed them in from there.

Unfortunately they are not long enough to properly work. They just barely sit on the air intake part of the carb, while they should be on there more than a few mm. I slid the airbox as far forward as it would go while still attached to the battery box.

I think they must have shrunk, since the little notch on 1 and 4 is not even close to the peg on the airbox to stop them from rotating. Its an odd situation.
I guess I have to buy new ones, althoughI'm gonna borrow a heat gun and try to use that to get them all the way on first.

She does start and run though, although I have no intention of actually riding with those hoses barely on there.

Are you sure they are in the right position in the air box? There are raised parts with a groove in the middle that air box fits into. If not installed correctly the boots will be too short.
Steve

The airbox is sandwiched between the two ridges on the boots. I'll post some pictures tomorrow.

I just can't get them to go on any further.

I got my new hoses in, they definitely confirm that mine have shrunk.

The first picture is the old one next to the new one to show the change in length.

The second picture is me stacking them and squishing to show the difference in flexibility. I pulled the old ones out through the airbox and will push the new ones in. I am going to soften these further with a soak in some warm water.

EDIT: Got em on, piece of cake. I just need to get the valve clearance adjusted by a pro, and then she should be good to go for an actual cleaning and some touch up on the frame.

Cabbagio Redentor wrote: The bowls do have drains to clean them up. I'll clean the tank and get a new filter. I really should do that anyway even if I had no issues. I'm trying to avoid messing with the carbs too much until I get the rest of the airbox pieces and slap that on there so I don't just have to tune it again.

The tank may surprise you. I cleaned and treated mine, I thought really well. Couple of months later I had problems similar to the one you describe. Pulled the petcock and the screens were gunked.