What are the symptoms fuel vapor lock 1994 ford E350?

Answer 1

Although vapor lock is very uncommon in fuel injected engines, you may have all of the same syptoms. When fuel temperature in the tank rises, the operating temperature of the fuel pump also increases. If your fuel pump is old, or weak it could be working intermittently, causing the same syptoms as vapor lock, but I find just as often these same syptoms are caused by weak ignition components. Very simple to diagnose, when it happens ( not after it cools down ), check for spark at the plug while a helper cranks the engine. I have talked to people that have spent hundreds on every other possible part, just to find out they have a bad $15 coil that acts up when it gets hot !