My dear 400E is giving me problems again, but this problem has been going on for the last few years. Whenever its hot outside, the car refuses to start. It seems like the engine is flooded. Today it was about 85 in Cleveland and the car had the usual difficulty starting, after about 10 min, I managed to get it start. However the problem today is the car stalled while I was driving. The revs just dropped and that was it. Any ideas on what's wrong? The car has about 170K miles on it and I'm pretty good with getting it serviced on time.