QuestionOcasionally (usually in the warmer months) after I turn of my engine for a short amount of time, when I go to re-start it, nothing happens. I have to wait several minutes and then it seems to take a while for the fuel to get through. The fuel pump is ok, the starter has been changed (it is not that)... do these cars occasoinally vapor lock? I haven't heard of that happening in years...
Answeri have heard of this happening in really hot, humid weather. does the check engine light come on?
A weak fuel pump or one that can't generate enough pressure can upset the calibration of your fuel system. This may cause the engine to run lean or starve for fuel under load, causing symptoms such as hard starting (hot or cold), poor idle quality, hesitation or stumbling when accelerating and a loss of high-speed power.
You may want to try and opening the gas cap. You will probably hear a swoosh and some gas vapors rush out. If the car runs fine after that, then either the return line, vent line, canister line or gas cap are in need of repair.
if the problem consists, it may be your engine is too hot to start. check your temperature guage if you have one by the speedometer. if it says H that means your water pump could be going out and your engine is overheating.
While vapor lock is a distinct possibility, you could have a problem with the engine temp, air temp or throttle position sensor. Your best bet would be to take it to a shop with a scan tool and they can check and eliminate the various sensors and computer as a problem.
