Woodwagen 68 Squareback

kostya.lyt · **Posted:** Thu Mar 06, 2008 10:41 pm

Dlicious wrote:

I've had this problem before in my car. It was the linkage not moving the throttle arms in sync. What I think is happening, like it happend to me, was when coming to a stop sign or idling to a stop. The carb throat fills with gas and "chokes" the motor on that side causing it to stall. The linkage needs to be set up so that when you step on the gas full throttle both throttle arms hit full open at the same time. Then you remove the linkage, adjust the fuel mixture. Reconnect the linkage and the sync the carbs using a snail. To sync the carbs you adjust the air mixture screw until the carbs are pulling the same amount of air. Do you follow? Because of the linkage settings being off before syncing the carbs, the air screw is too far out on the one carb, causing it it to flow fuel at idle.

By air screw you mean idle mixture screw, right? If so, we had it turned all the way in, and it was still dripping fuel.

Dlicious · **Posted:** Thu Mar 06, 2008 10:46 pm

2 screws: Fuel and Air. The air screw is on the linkage. the more you screw it in, the more open the throttle. (its the one I think is screwed in too much) The fuel screw, usually right above the intake(on solex anyway) the more you screw in the less fuel ratio. I am not positive that when you screw the fuel screw in all the way it shuts off the fuel. It just controls how much fuel to air is being mixed.

kostya.lyt · **Posted:** Thu Mar 06, 2008 10:48 pm

OK now I know what you mean, but it did that even with the air screw almost all the way out, and it still did that.

Dlicious · **Posted:** Thu Mar 06, 2008 10:55 pm

Well, if you had that screw almost removed, and it still drips fuel, that leaves the fuel pump on the side of the carb to be suspect. But I don't think so....... Remove the idle screw and screw in the fuel screw, and then if it still leaks, well then yer screwed. Goodnight.....I'm gonna go to bed. I will sleep on it. I think I need more info though.

mk-Zero · **Posted:** Thu Mar 06, 2008 10:57 pm

It really seems to me like its something with the float and or needle and seat, but Kostya checked all that out. Strange indeed...

kostya.lyt · **Posted:** Thu Mar 06, 2008 10:58 pm

Dlicious wrote:

Well, if you had that screw almost removed, and it still drips fuel, that leaves the fuel pump on the side of the carb to be suspect. But I don't think so....... Remove the idle screw and screw in the fuel screw, and then if it still leaks, well then yer screwed. Goodnight.....I'm gonna go to bed. I will sleep on it. I think I need more info though.

We'll try that tomorrow too. Thanks for the advice!

Dlicious · **Posted:** Fri Mar 07, 2008 7:37 am

To rule out the float valve: Pull it out and blow thru it with your mouth. Try and stop the flow of air with your finger on the "valve stem"(i guess thats what u call it). Physically test the part. Does the float have fuel in it from a small leak? Mabey from the original test using the fuel pump, it had enough pressure to seal the flow of gas, but when its running/flowing it isn't sealing right and allowing the bowl to overfill and gas is going down the overflow circuit........

EAnderson · **Posted:** Fri Mar 07, 2008 8:10 am

I talked to my dad last night. He told me the same thing about the linkage set-up and sync. of the carbs. But he said it wasn't dripping gas like now. I still suspect a problem with the float/needle and seat. I'm leaving now, to go to the shop, and I probably won't get too much paying work done today :lol:

mk-Zero · **Posted:** Fri Mar 07, 2008 9:20 am

EAnderson wrote:

I talked to my dad last night. He told me the same thing about the linkage set-up and sync. of the carbs. But he said it wasn't dripping gas like now. I still suspect a problem with the float/needle and seat. I'm leaving now, to go to the shop, and I probably won't get too much paying work done today :lol:

I would just rebuild that sucker, it can't hurt...

EAnderson · **Posted:** Fri Mar 07, 2008 11:35 am

It's running and idling :shock:

, I'm going to hook up the linkage and drive it, fine tune, and hopefully that's it. I guess somehow something got out of wack when I pulled the motor, and put it back.
Thanks for the help

Woodwagen 68 Squareback

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