 I have the same problem the first gentleman that wrote his report on the first page.  The car starts but sometimes 1/10 starts it takes roughly 4 seconds.  The dealer has changed the fuel pump cleaned the carburetors and still has that exact problem.  They then told me that fuel pump was 25 percent efficient that's why it was replaced.  They then took it again and check it online with Germany and said intake manifold.  The part was replaced but the problem is still there.