250 starting problems

[asiaexpat]

Very difficult to start my kdx..once its warmed up starts easily. I live in warm climate. Any ideas on what might be wrong? Recently changed to a 33mm chinese carb as the 35 mm original needs repairing and I have not found a repair kit yet.

[KDXGarage]

Welcome to kdxrider.

Assuming everything else is OK, carb or reeds would be where I started.

[Broken Wrist]

Was it difficult to start cold prior to installing the Chinese Carb ??

[Molly's 70]

My guess is that Chinese carb is a pile of doo doo.

[Chuck78]

Chinese carbs have poor quality control. Seldom are they going to meet the required precision to get the job done as good as proper OEM spec carbs.

[KDXGarage]

What is the issue with the OEM carb?

How did it run before the OEM carb went bad?

[asiaexpat]

What is the issue with the OEM carb?

How did it run before the OEM carb went bad?

with oem carb==when i filled gas tank gas just started pouring out of the the overflow hose. But it strted easily with oem carb. Basically i took bad advice and got the chines carb and was told my oem needed a repair kit which I cant seem to find.

[asiaexpat]

My guess is that Chinese carb is a pile of doo doo.

sounds right--30$

[asiaexpat]

sorry for the slow responses--i didnt get any notifications

[Chuck78]

You just need a float needle and float bowl gasket for the OEM carb, and definitely a good idea to change out the jet block gasket with a genuine OEM Keihin part, not aftermarket. It's not shown on the Kawasaki parts diagrams, but it's there. You just have to order it from Sudco, Jets R Us, or JD Jetting to get a guaranteed genuine Keihin part.
Apologies if you've said you already replaced the jet block gasket, I didn't have time to read the thread again.

The float needle or a gummed up seat for the fooat needle, along with proper float height adjustment, I believe 18mm is the accepted spec vs OEM calling for 16mm, & your OEM carb issue will hopefully be resolved.

[bufftester]

Yeah, if you turn on the gas and gas just starts pouring out the overflow you have a stuck float, easily cleaned up with a carb clean/rebuild. Likely that's all that's keeping you from running your OEM carb. The Chinese clones are $30 for a reason

[KDXGarage]

Check for the rubber cone not sealing against the face.

[asiaexpat]

You just need a float needle and float bowl gasket for the OEM carb, and definitely a good idea to change out the jet block gasket with a genuine OEM Keihin part, not aftermarket. It's not shown on the Kawasaki parts diagrams, but it's there. You just have to order it from Sudco, Jets R Us, or JD Jetting to get a guaranteed genuine Keihin part.
Apologies if you've said you already replaced the jet block gasket, I didn't have time to read the thread again.

The float needle or a gummed up seat for the fooat needle, along with proper float height adjustment, I believe 18mm is the accepted spec vs OEM calling for 16mm, & your OEM carb issue will hopefully be resolved.

Im not sure what kit to order. the markings on my oem carb are PJ 150AFH

[KDXGarage]

Can you post a picture of what you are seeing so we can see it too? Instructions in my signature.

[asiaexpat]

Can you post a picture of what you are seeing so we can see it too? Instructions in my signature.

My local mechanic says I need new float bowl gasket. I would prefer a full repair kit. Not sure which one to buy.

[KDXGarage]

Did that bike come stock with a PJ carb? In the USA, our KDX's had the PWK from 1988 onward.

[asiaexpat]

Did that bike come stock with a PJ carb? In the USA, our KDX's had the PWK from 1988 onward.

I dont know..bought it second hand..Imported into thailand from Japan I believe

[KDXGarage]

What year and exact model is it?

Do you have a VIN or frame number you can post? Thanks. A place called impex has parts diagrams.

[Chuck78]

Is this a KDX250SR?
The parts may be different between an offroad model PWK36 & an SR street legal model, but the type of parts needed will be the same,float needle and float bowl gasket, perhaps jet block gasket.

[asiaexpat]

Is this a KDX250SR?
The parts may be different between an offroad model PWK36 & an SR street legal model, but the type of parts needed will be the same,float needle and float bowl gasket, perhaps jet block gasket.

I dont know if this sr. the graphics are different than the sr's that I have seen here. But it is street legal..turn signals etc..