KZ400 oil/gas coming from breather!! HELP

That filter will be problematic. They need more than gravity to work. They eventually seal up and stop flowing. With a fuel pump they work fine.

Here's a video. At first, no flow. Then when i pressurize the tank, it flows.


You will want a metal screen filter or scintered brass/bronze, made for bikes.

loudhvx wrote: That filter will be problematic. They need more than gravity to work. They eventually seal up and stop flowing. With a fuel pump they work fine.

Here's a video. At first, no flow. Then when i pressurize the tank, it flows.

You will want a metal screen filter or scintered brass/bronze, made for bikes.

Thanks, I have since the video mounted the filter sideways and it flows just fine now.

After reading around for the last 2 days, I've decided to purchase a new none vacuum petcock. Not sure if this is the issue, but the existing petcock's setting never turned the fuel off. And it looked to be "modified" aftermarket. At some point I'll probably get a different kind of fuel filter as well.

I had the same problem with the paper filters losing flow after a while and got stranded on my way to work.



I highly recommend a filter like this one:
It can be taken apart and cleaned as necessary.

I like the concept of that glass one, but I'm paranoid of the glass breaking.


I use both of these types.

This first one is nice, but make sure to get it from Z1 Enterprises. I've seen cheap knockoffs that turned yellow and soft over time. I've had one of these for a few years and it appears to be holding up.


www.z1enterprises.com/ItemDetails.aspx?i...2f4%22&item=MA2345-1



This second one comes apart with a cleanable scintered bronze element inside.
Just make sure to screw it back together tightly. I left one loose once and it started dripping a few days later.

www.denniskirk.com/emgo/metal-fuel-filte...80612.prd/180612.sku

is that a vacuum fed petcock?

gengomerpyle wrote: is that a vacuum fed petcock?

I'm assuming it was. But it has a hose that has been blocked off. Either way it doesn't turn off the fuel flow. I ordered a replacement non vacuum.

if its till a vacuum petcock. looking at the position its in on the video its set to open flow. it maybe flooding your case with gas.

Juicyk wrote:

gengomerpyle wrote: is that a vacuum fed petcock?

I'm assuming it was. But it has a hose that has been blocked off. Either way it doesn't turn off the fuel flow. I ordered a replacement non vacuum.

Well, I'm waiting on a petcock, needles, and seats at this point. hopefully with all those replaced I can start cleaning and modifying!

Replaced the needles last night, one seemed a little worn but it seemed insignificant but I'm no expert.
While pulling the bowls I did another inspection just in case I missed something. I noticed what looked like a small circular hole at the base of one of the brass overflow tubes. To me it looked as if it was supposed to be there but like I said earlier I'm not expert. Any thoughts?

wondering were you got a petcock I cannot seem to find one for my tank.

If you're going vacuumless I found mine on amazon, link below.

www.amazon.com/gp/product/B00B4XDO8M/ref...00_i00?ie=UTF8&psc=1