Based on post #13, I'm thinking O.P. may have a fuel delivery problem at startup, and THOUGHT he had a low voltage issue. Blueeyes - You need to do the tests that Padgett suggested, to rule out the battery, and/or find the drain. Buy an inexpensive digital voltage meter and just do it; or have someone else do it for you. I'm thinking now that it is merely a bad check valve and it's taking longer to start up than usual??