I own a 1997 Cobalt 220 with a Mercruiser 7.4LX EFI/MP engine. Mechanical fuel pump and Vapor Separation Tank (VST), does not have cool fuel. Love the engine, but on a hot day (central AL) after driving a while, stop for lunch or to swim, it will not start up. Does not happen in fall, winter...
This has been a very enlightening thread. I'm having the same issue. Same engine, my serial no. is within 100 of yours. What was the final outcome / solution? Did you install the fuel pump kit? Did it work? Did you do anything else to solve the VL problem? Thanks for your help.
