Carb question

Had the carbs off to replace the exhaust gasket, put everything back together and fuel is running out of the overflow tubes. During the week or so they were off . They were laying on their side, I sprayed them with some carb cleaner
69 HS-4's

I overfilled them with oil and siphoned out the excess. Do you think the floats are stuck on both of them? Will tapping them help?

Thanks

Stuck floats are my first guess. You can whack them all you want, but you are going to have to take off the covers and clean them.

If you're careful, you can use the old gaskets to make a pattern so you can cut new gaskets from a cereal box.

They will be fine.

Are you sure you reconnected the fuel and overflow hoses to the correct ports on the top of the fuel bowls? Pic?

Cheers,

Rick

Had the same problem.
I took off the float bowl covers off and cleaned the needle and seat. Must have been some tiny particles lodged in the needle and seat.
Fitted an in-line fuel filter - the original did not have a fuel filter!
No problem since!
Good luck
Andy

Here are a couple shots of my fuel lines, took the cover off the front abd could not see any trash or binding of the float.

Check the needle and seat valves.

When you laid the carburetors down, some debris from the bottom of the fuel bowls, probably got into the needle and seat assembly. Remove the fuel bowl lid and remove the hinge pin that the float pivots on. The needle valve will now drop out. Clean any foreign substance from the needle and seat and reassemble the fuel bowl. From your pictures, it would appear that all of your lines are going to the correct places. RAY

Easy way to remember which port is fuel inlet and which is vent on SU H and HS carbs: remember that the float is hinged near the edge of the float bowl, and that's where the needle and seat are located. So the off-center port is fuel inlet, and the port in the center is the vent...

Just picture what's inside the float bowl lid... ;)

Dick

Fuel. RAY

Dick, you asked Gary to picture what was inside the float bowl lid. My answer was fuel. Seemed like as good a guess as any. RAY