Hello all,
I have a 1968 mustang with a 302. Most of the time, especially when the engine is cold, it starts just fine. Sometimes, more often when the engine is hot than cold, I have to crank the engine for nearly ten or fifteen seconds before it starts, and then it catches, runs a little rough for a bit, then funs fine. Once or twice, it has not started at all after fifteen seconds of cranking. I really hesitate to even crank it for more than ten seconds, because I don't want to overheat the starter. The gas cap does not have a seal on it, which is why I doubt that it is vapor-lock related. The fuel line leading to the carb has a clear fuel filter, and it is always full or nearly full. The carb has float bowl gas windows, and they never drain. I was at one point having trouble with the accelerator jets draining into the manifold, but i corrected this problem by adjusting the accelerator arm. For reference, The carb is a Demon 625 cfm road demon jr. I have an electronic ignition module in the distributor made by crane cams called the XR-I. My normal starting procedure consists of pumping the throttle twice and turning the key- that usually works fine, except for the incidents described above.
Thanks for the help and input!
PS- anyone know any tips for finding vacuum leaks- I'm a bit scared to use the propane method. Maybe I'm a wuss :-D