Could some one tell us how the excelerator pump linkage on the float bowl side hooks up to the engine, that's a carburator for a 1968 chevy step van. the carburator is a rochester monjet # 7040021

if the carburetor keeps flooding out, the float could be stuck in the up position. tap lightly on & around fuel reservoir to free. depending on age of carburetor, you might need to put in a carburetor kit.

Possible float is sticking in carb. Tap side of float bowl with screwdriver and see if that helps. If not, I suggest checking the float level and make sure it is adjusted at the right height.

didnt specify much like engine size--generic answer--67 carbed vehicles used a simple cable to linkage hook up on side of carb
1968 Chevy C10 Inline 6 250 Carb upgrade Install Holley 350 CFM 2 barrel... and if you have bad slap engine may not make it to far before blowing up or seizing

Inside your carburator is a mini gas tank (float bowl) that keeps a specific amount of gas in reserve to accommodate changes. It isn't getting enough gas. The most likely culprit would be the fuel filter, so get it changed first. If that doesn't make the problem go away then the fuel pump is likely getting weak and not pushing enough gas into the carb. You can get it tested before you change it to make sure. If it tests good or you change it and still have the problem you will have to get the carburator taken off and rebuilt. Over time there will be a certain amount of crud acumulate in the float bowl that is interfering with gas delivery or it's also possible the float has become "waterlogged" and is not keeping gas at the proper level. Rebuilding carburators is not a job for rookies. It may cost more up front to have it done by a shop, but it will save you a lot of grief in the end.Hope this helps.

TAKE THE FUEL LINE OFF THE ENGINE SIDE OF THE PUMP WORK FROM THIS POINT BACK TO THE TANK.PRIME THE LINE FROM THE PUMP TO THE TANK WITH FUEL.RECONNECT FUEL LINE BACK TO THE PUMP FROM TANK. HOLD BACK PRESSURE WITH YOUR THUMB OVER THE PUMP ENGINE SIDE .TURN THE PUMP ON .IF IT DOES NOT PRESSURE UP THE LINE IS CLOGED FROM THIS POINT TO THE TANK.THE FLOAT HAS NOTHING TO DO WITH THE FLOW OF FUEL FROM THE TANK! AFTER YOU GET FUEL TO THE PUMP FROM THE TANK REPEAT THE PROCESS TO THE CARBURATOR SIMPLE PROCESS OF ELIMANATION! FUEL IN TANK>PUMP>CARBURATOR>ENGINE > MOTER RUNS

GM uses an eight digit number to identify their Rochester carburators. It should be stamped into the metal on the float bowl area. It should be on the linkage side. If it is the original carb on the truck it will likely start with the number 1708---- or possibly 1707----. Any time I went looking for the carb number it usually took a few minutes to locate and read it. They didn't exactly kill themelves making it easy to read. Take a rag and wire brush with you to clean off the grime as well as a can of spray cleaner or penetrating fluid. A flashlight would be a big help too. You need this number to order rebuild kits and to set it up after. Hope this helps.

The diaphram can tear, but when this happens it typically leaks gas into the crankcase. Is there gas in your oil? If no, recommend you take the float bowl cover off and see what's going on when you start it. Please let me know if you have more questions.

there is a float valve. There may also be a filter on the inlet. First check for filter, then remove top from float bowl to see why fuel isn't flowing in. You may want to get a rebuild kit. they aren't expensive and they usually come with instructions.

It goes into the center hole it is longer than the other two tehe two sidescrews just holds the base plateon the third screw is the venturic vacum screw. if you screw it in the wrong hole it will bottom out before it's totally screwed down tight.

The float chamber is in the underside of the carburator if this is a carburated car.
If the float is in fact shutting off the fuel to the carburator the engine should still run on the fuel in the float bowl. Unless it is a very long sharp turn. Have you tried standing still and just turning the wheel hard to the right and see id the engine cuts out ? If it does you may have an exposed wire that touches somewhere when steering is all the way over to one side.
Hope this helps
Sam