Oil sputter is going to be a normal thing if the oil cap is not on while the engine is running. The engine should never be run with the oil cap open. The engine actually has less compression when the oil cap is open, and this could hurt the engine.
No.
The van must be in park
It refers to an engine where the area occupied by the valves when they are open is occupied by the piston when the valves are closed. If the timing belt lets go while the engine is running the piston will smash the open valves doing loads of damage.
Key has to be on but engine doesn't have to be running.
Probably your engine thermostat is sticking open
Engine running
Engine was running at the time of the
sounds like you need a new accelarator pump in your carburettor
The float is probably stuck open.
You have a blown head gasket. Open your radiator while the engine is running. You should find exhaust coming from it.
Try jump starting the engine. Get it running then try to open it.
You can feel it, hear it, open the hood and look at it and if it is running the indicator lights on the dash will be off.