CARB CLEANING TROUBLE

so how do i know if i have gas goning into the crankcase or should i just stop the gas leak and change the oil anyway like u said .

well before i was sluggish and running rough so a friend told me since it was a used bike and i didnt know anything about it. it would be wise to start doing my own cleaning before i run into trouble .

the fuel is coming out of the air jet on the right side of the bike. its the only one that has this leak. the left one is just fine

one thing that i have noticed is that when i have the carbs off gas in the left carb comes out of the overflow hose that u were asking about . but the one that leaks on the right doesnt have anything come out unless i take out the drain plug

at20 wrote:

...going by the pics in my repair book....

Unaware of which repair book is being used, but would suggest an official genuine Kawasaki factory service manual for the specific make and model motorcycle involved, which has detailed explanations, information, charts, diagrams and illustrations of the individual carb parts and circuits involved.

FSM's are sometimes available on ebay. And are typically superior to after-market manuals.

Good Fortune!

i have the Clymer Kawasaki service , repair , performance manual

its for the kz400 , 44o twins from 1974- 1983

Left carb --- Functioning overflow circuit is likely allowing excess fuel to escape before rising high enough to flow through the air jet.

Right carb --- Non-functioning overflow circuit is likely allowing excess fuel to rise high enough to flow through the air jet.

Would suspect the float valves are improperly functioning (for whatever reason) in both carbs.

When fuel has gotten into the crankcase, the oil usually has a definite gasoline odor, and is often noticeably thinner from being diluted with fuel.

Good Fortune!

so where are the fuel valves i see the float valve on the diagram but not the fuel valve

at20 wrote:

so where are the fuel valves i see the float valve on the diagram but not the fuel valve

Oops. :pinch: You are correct.
I meant float valves (not fuel valves).

Good Fortune!

so if i replace the flaot valve that should stop my leak.

if the overflow nipple is clear i need to replace my flaot valve in the carb thats leaking and that should solve my problem

at20 wrote:

so if i replace the float valve that should stop my leak.

if the overflow nipple is clear i need to replace my float valve in the carb that's leaking and that should solve my problem

It might resolve the issue if corrects an otherwise poor interface between float needle tip and seat orifice.

But where the float valves weren't leaking before disassembly, they should not have leaked after reassembly, unless matched with a different seat.

Could be a float valve issue and/or a float function issue that causes excess fuel being allowed past the float valve into the float bowl.

Some of the many reasons could include such things as poor interface between float needle tip and seat orifice, floats incorrectly installed, float damage such as leaking or bent, or float sticking/hanging, or mal-adjusted float tang, etc.

Good Fortune!

well ill just have to try clean the overflow nipple and the float valve i really hope the they just need to be cleaned .


thanks for the help

at20 wrote:

well ill just have to try clean the overflow nipple and the float valve i really hope the they just need to be cleaned .


thanks for the help

Me too!
And you're most certainly welcome!

Good Fortune!

I really appreciate it. I know I been bugging you for hours.