More then likely The fuel pump has quit pumping fuel. Possible cause: Fuel pump relay,Fuel pump fuse, Bad fuel pump stopped up fuel filter, Not enough fuel pressure. If it's fuel injected then it should be no lower are higher then the factory FUEL PRESSURE SPEC'S.
It would help alot to know what you are working on. Year, engine size and what it is. Does it have fuel in it, for SURE ? Check fuel pressure with fuel gauge. Very important to check with a GAUGE.
if it has a carburetor it is normal
Choke not closing when cold, Accelerator pump in carburetor not working-- Float leval to low.
Mine won't start eather
Use it 30 min before you start...... just spary on top and bottom of your.....p....
A carburetor will not start when it does not yet enough fuel. A carburetor will not start if it gets too much. Fuel and not enough air.
Could be a bad accelerator pump Could be a bad choke adjustment
fuel pump is the first place i would look
If vehicle has a carburetor--accelerator pump could be bad--kit availabe for repair/replacement If onlty happens when cold choke is either not adjusted properly or not working
lack of fuel to injectors.
Carburetor
The carburetor needs rebuilding.
When you start to show!! it wont be jiggly eather!! it starts to feel like muscile!!!!