Bought a Mercedes 560SL a few months ago. Ran great for 3-4 months. Now every 4-5 days it will start and mmediately die. When this happens it will turn over (crank) vigorously, but will not start again. After 4-5 hours (a couple of times only after 4-5 days) it starts normally. The last time was 2 weeks ago and it still won't start. Local Buick mechanic can't find what to do. Nearest good Mercedes mechanic is 35 miles away. Any hints for the local guy so I can get it started and take it to the Mercedes man? Getting desperate and any help will be greatly appreciated. henry