hi guys ive seen a lot of post already about this but no answer or advice about the solution.
my mcs 03 when im going to start at the morning or when cold start great but after i drove it a little bit or get warm and i turn it off it takes like 7 or 8 seconds to make it !
I already change , spark plugs , air filter , crank sensor, car runs fine and doesnt have any code! try it to change the fuel filter but this one its like a metal cannister that i cant change it ! i didnt see the way to do it
i live in the caribbean so the temperature its always the same !

 

First thing I would check is the residual fuel pressure. Remove the intercooler, connect a fuel pressure gauge to the fuel rail and re-install the intercooler).
With the engine idling it should be 3.3 to 3.7 bar. Switch the engine off and monitor the fuel pressure. It should not drop more than 0.5 bar over 20 minutes.

 

thanks i will check tomorrow !

 

thanks i will check tomorrow !

 

You might also try running a can of injector cleaner in your next two gas tanks.

 

hi guys here again, i have tried both, the fuel presure it seems to be fine 50-52 psi and also i put 2 injectors cleanet in two tanks and one of them filled with 3 gallons of 100 octane!
the mpg its awfull for full tank it give me 280-300 kms.

 

in this weekend i will put out the injectos to take it to the shop to clean it and see whats going on with that. and the belt tensioner its seems to fail ,gonna doit on weekend too . any other advice?

 

hi guys a quick update , put out the injectors there was one with problem already replaced but the problem still going ! i fill up the tank and its takes 14.8 gallons and there was a big gas smell in the cabin . it is normal ?

 

is the car bone stock?

 

My 2005 R53 had the exact same starting issue for years. No one, including MINI service techs could figure out what was causing it. I replaced the original coil pack and it disappeared. Problem solved. Hope this helps.

 

I had same problem, turned out it was the injectors. They would drip fuel into the cylinders causing them to flood. Replaced all four, problem solved. Hope it helps

Paul.

 

all injectors all clean change it the filter also son the guy at the shop told me they are running just fine , and the only mod i have its a BMP CAI .

 

do you replace it for the OEM ? i was thinking on putting a msd coil also with new wires !

 

I installed the MSD coil pack and wires at 262k miles and the issue completely disappeared. Then a new engine was installed at 266k. The techs replaced the MSD with a new OEM pack that came with the new engine and it works fine as well. So I would guess the original was bad because that long crank issue began way back in 2006 at around 60k miles. It was never a serious problem - just irritating.

 

Today I check the pressure again after the injectors are clean and also change it both O2 sensor and maf sensor , but well the pressure drop after 1 minute 1 bar

 

Sorry to dig up an old thread but did you ever find out what the problem was? I have similar symptoms, when car is warm it seems hard to start, and also after filling up with gas I get a fuel smell but it seems to be only if it is driven hard right after filling up.

 

I have the same issue as well; but it doesn't make me want to replace fuel injectors or anything major like that lol. But if it was a simple sensor or even fuel filter, etc, I would fix those. Mine has a long start but once runs it runs flawlessly after replaced plugs. Even if lug it etc so I can't imagine it's the coil, but fuel/injectors sounds more likely, or a sensor reporting bad temp info or something strange, or bad MAP pressure?

 

I've had this problem in warmer months (starts easy in cold weather). I do find that if I drive more miles (I don't do a lot of driving these days), that cold starts are easier. I DO NOT do maintenance on my own car. What's a "coil pack" and is it worth changing in a Mini that turns 24 in July?