Obviously a weak mixture, as using the choke makes the mixture richer. Quite possibly there's an air leak between the carburettor and manifold
It is the control valve that regulates the flow of wellstream fluids to the inlet manifold of the treatment facilities
Replacement parts to fix a manifold leak can be found at an automobile parts store. Most parts for the E150 can be found in salvage yards, also.
car wont run its like a carb if the choke is close the car cant breath
Make sure you're using the choke lever properly - you might be working it backwards. Remove the clamp holding the carb to the airbox manifold. Push the manifold away and stick your finger into the rear of the carb. When the choke flap is blocking the carb - that is the choke position (start a cold engine). When the flap is open - that's the run position. it could also be that you have a bad idler and it needs replacement try that
A Choke manifold benefits when placed downstream of the sand trap since it is not exposed to the abrasive sand. However, there are times when it is necessary to place a choke manifold upstream of the sand trap. The most common reason is that the pressure at the wellhead is higher than the sand separator rating and must be reduced. Another reason is that the new well is producing mostly liquid and the manifold is used to shunt the liquid directly to holding tanks. As the flow from the well dries out, the manifold makes it easy to change the flow from tanks to sand trap, and from there, into the Test Separator.
Manifold.
Sounds like you might be talking about the heat riser passages that provide heat for the automatic choke (if equipped). Not needed for carbs with manual choke or heat stove-type pulloffs.
This is done to restict the coolant flow and force more thru the intake manifold around the throat for better control of the choke warm up period
Try e-gunparts.com
junk yard or auto parts store
No.