Hesitant Start Up

[MickCooperS]

I have noticed recently that my Cooper S is hesitantly starting about 1 in 5 times. Its hard to expain but usually i turn the key and get a 'duh duh start'....now sometimes i get a 'duh duh duh duh start'....can anyone offer some advice.....

[Root Ginger]

I get this in both my Cooper and Cooper S.

In my Cooper it's normally after the engine has got hot and then I try to restart it fairly soon after I've switched it off. In my S it seems to be temperature related.

[Lawrothegreat]

I have had this problem recently too; after driving around all day or stalling in traffic (once!) the car has hesitated to start, but not when it's cold!

[JP Money]

Same here. Only in the heat. I had it happen last week, it was turning over but not start. So I let go of the key and it paused for a second or two and THEN started. Wierdest thing.

[S33BBY]

Same here (well in my old 2004 build One at least). I haven't noticed it so far on my 2006 build Cooper. The car always seemed to start best when cold.

[smc]

Quote: Originally Posted by JP Money

Same here. Only in the heat. I had it happen last week, it was turning over but not start. So I let go of the key and it paused for a second or two and THEN started. Wierdest thing.

I had this serveral times, Have it checked and upon collection they told me they have change sensors for air intake and radiator. 6 months have pass with just one kick start.