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				Cold starting problem
			 
			 
			
		
		
		
			Please help  I have a 2000 boxster with 60k miles.  For the past week when I go to start my boxster. The engine feels like it is missing a cylindar, the car shakes and has a rough idle,  for about 30 secs and the it levels out.  The car is fine for the rest on the day, it starts just fine until I let it sit overnight and start it again the next day.    It did this a  few time this winter when it was really cold outside but this is happening on a 70 degree afternoon. Any thoughts? Oh I also replaced the sparkplugs about 3000 miles ago with original equipment.
		 
		
		
		
		
		
		
		
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