I have a 1987 mustang. the car is carborated, in line electric mr gasket fuel pump. it vapor locks all the time, well at least i think thats what its doin. i unhook the line from the filter, turn the switch on until the fuel picks back up. then i plug the lline back up to the filter and it cranks. please let me know if you have any solutions. thanks

most likely not as it will not be able to draw fuel through the electric pump .Well most vehicles with fuel injection and a pump in the tank i cannot draw the fuel through when someone has filled with diesel or the vehicle has been parked up for a while and the fuel goes dead

To promote easy starting, all gasolines contain volatile constituents that under some conditions, such as high ambient temperature, tend to produce more vapor than the fuel-system vents can handle. The action of an engine-mounted fuel pump, in decreasing the pressure at its inlet, tends to vaporize the fuel. If the vapor forms faster than the pump can draw it from the fuel line, the flow of fuel to a carburetor is effectively stopped and the engine stalls. Vapor lock is much less likely on a fuel-injected engine with an electric pump in the fuel tank. However, an engine with port fuel injection may experience vapor lock if the injector or fuel overheats, or if the Reid vapor pressure of the fuel is too high.

Read more: http://www.answers.com/topic/vapor-lock-1#ixzz2Pf13O7aL

If your timing is off,it will effect the fuel getting to carb.Your plugs may be fouled.

Same as the last TWO times you asked this question:

Remove fuel filler neck
Remove fuel tank strap retaining bolts
lower fuel tank
Disconnect fuel lines, vapor lines and electrical connector
Remove fuel pump/sender assembly lock ring
Remove fuel pump/sender assembly from fuel tank
Disassemble fuel pump and fuel filter sock from fuel sender assembly.

Reverse procedure to install

Hi, The fuel pump is in the tank. You will have to remove the tank to get at it. Good luck

I have never herd of a vaper lock on a 69 mustang. Try to change your fuel pump or in line filter hope this helps CJ

carborated or injected? could be vapor lock. could also be intake manifold gasket going bad, but unlikely. could aslo be cracked fuel lines allowing air into the lines.

Actually vapor lock refers to a condition in the intake manifold on a carbureted engine. You don't have vapor lock. What you may have is a filter inside the tank, its nicknamed a sock. Its a fine mesh screen and may be plugging up. When you pull the fuel line the fuel flows back and unblocks a small section , until it starts too **** again and re plugs. You may also have fuel pump that starts to lose power when its gets hot. Lee

check for fuel lines laying near heat sources such as on manifold , gas gets hot and can cause vapor lock, also check the automatic choke is it sticking and causing flooding after car warms up?

Do you have any of you fuel lines close to the exhaust? (vapor lock)