Wont start 1985 VW camper wont start unless I put a little gas in the throttle body??? What could be the problem?

Check fuel pump fuse, if fuse is good, most likely a bad fuel pump vor clogged fuel filter. Without knowing the make and model hard to say where each is located. Fuel pump is most likely in gas tank unless its an older vehicle.

You have a single fuel injector in it right. Try right at the end of the gas pedal cable at the engine there is an electrical plug and a little device that goes around in a circle when the gas is mashed. That is the throttle position sensor. Try unplugging that and if there is no difference in the revving then the throttle position sensor is out. If that is not the problem, then plug your engine into a an onboard diagnostic reader. 85 is an obd1.

Sounds like you are loosing fuel pressure overnight. Could be a fuel pump problem, or a leaking injector.

It sounds as though you are imitating a cold start injector by pouring fuel into intake. I would start there

Check fuel pump pressure. First shoot a little starter fluid into the throttle body to see if it runs. If it does, fuel delivery problem.

Take the gas filter off. Should be located near the front of the carbeurator, take off the air cleaner and look for it, it takes 2 wrenches to take it off, a little gas may spill out but not much and replace it, however there is a strong possibility that he gas pump is out if the filter is fine. Hope this helps

make sure the car is on a flat surface ,you can pour a little bit of gas down the throttle body or spray starter fluid in throttle body that should crank the car

The injecters may be bad, or not getting power.Check wires to injecters @ throttle body to make sure they have not rubbed bare .

Did i answer you before? Anyway, try cleaning the throttle body with a little carb spray on a cloth shop towel wraped on a screwdriver.With the engine off,remove the tube to the t-body,hold the throttle alittle, and spray a couple of squirts inside.Spray some to wet the towel, and pushing it in and out gently of the t-body.becareful not to bend the plate inside or leave any towel inside.look at it with a flashlight to see if it's clean. Hope this helps

Did you change the fuel filter?