carb trouble 85 250r

[badpig121]

Alright, I rebuilt the 85 250r I bought. It had a Bill's exhaust and was ported before I bought it, and it was jetted with a 145 main, middle needle clip. I put a rad valve with carbon fiber reeds, K&N filter, and eliminated the airbox lid. I changed the main jet to 148. We're both at about sea level.

It ran great for a day, I went to fire it up today and it wouldn't light, just flood. The spark plug fouled, so I put in another. The thing is, when it floods, It pours gas out the overflow hose until you turn off the gas at the petcock. I removed the main jet and found my friend tightened it too much and it cracked at the threads. I replaced it and it still pisses out the overflow hose until you turn off the gas. Dang!

So, Any ideas? What the heck could cause this? It does have a full desert tank. Could that cause too much pressure on the carb and make it overflow like that?

[MO350X]

That's what a past trike of mine did and it was a bad/old float needle.
I rebuilt the carb. with a new float needle included, and it ran fabulous.
You said you rebuilt it I assume you replaced the float needle?
If that's the case, you might just have crud in the float needle.

Hope that helps.

[hrc85250r]

if its the stock carb, it is also possible the seat the float needle goes in...they arent replaceable, and 20 years of friction will ruin it...i replaced my float needle, and it still flooded....so, i moved on and got a 38 a/s..

[badpig121]

I didn't rebuild the carb, just did a frame off. The motor ran great when I bought it. It started second kick. I'll try some carb cleaner to see if some gunk got in the needle seat. If that doesn't work, I guess I've got to get a new carb Oh well, It's an excuse to build it more

[badpig121]

Looked at new carb's at ESR. What's the difference between the Airstryker and the PWK carbs?