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Old Jun 8th, 2014, 10:05 PM
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Exclamation HELP 04 MCS turning over but refuses to fire

Hi guys,

I have been on her since i bought my first mini about 2months ago but only getting around to saying hello now.

So i bought a r53 cooper s and i love it, but it let me down today. I went for two short drives with the final one being my local tescos. Came back out to the car unlocked it using the button on the key and the car has refused to start. It turns over but wont fire.

At first i figured it was the immobilizer so i disconnected the battery, left it for an hour and went back to and still the same problem.

Then i checked all the fuses, not a single one burnt out.

Decided to check the fuel pump filter and that seemed fine, checked the fuel line running from the pump and that was fine too. The fuel lines coming from the engine seemed very dry.

can anyone help me with this?

cheers,
ben
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Old Jun 8th, 2014, 10:17 PM
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Hello Ben, I have read though your complant and you would believe how often you see non-start faults are very simple things most I the time that get over looked ( I work at mini main dealer)

The first thing to check is if your battery is good before I might just click over the starter but not have enough amps to fire it up.

If the battery is ok, I would recommend checking the fault codes.

And if you don't have a scanner, can you hear the starter clicking?

If you can msg me back and I can talk you though a few more in dept stages.
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Old Jun 8th, 2014, 10:20 PM
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@Minitech93

Im not getting any fault codes coming up whatsoever. I don't think its that battery as i hooked up the car to a friends to jump off it and still would no start, it was still turning over but not firing up.
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Old Jun 8th, 2014, 10:36 PM
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Ok well next stage is to check if you have the basics needed to run , fuel,air,spark.

First thing to check is that your getting fuel to the fuel rail, if you not then you"ll need to back track the fuel lines to see if you have a block or a split in a line. If you are getting fuel to the rail the beats is your injectors are getting fuel.

Next step is spark test, two ways you can do this to use a spark tester and put this between the plugs and coils and see if they spark. If they don't then check the condition of your leads and check the ignition ends of the ignition lead tower are not damage or corroded.

Air would not be a starting problem it would cause more of a running problem.

If all these are working correctly then make sure your getting 12v down to the starter as soon as the ignition is turned on.
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Old Jun 8th, 2014, 10:41 PM
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This may sound a bit stupid but how exactly can i check if I am getting fuel to the rail? I opened the two fuel lines that can be accessed without taking off the intercooler and they were dry.

I was planning on removing the intercooler and checking the rails in the morning as darkness was falling.
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Old Jun 8th, 2014, 11:00 PM
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When you remove the inter cooler you will see a larage pipe going into the top of the fuel, remove that pipe and crank it over and if fuel comes our your getting fuel to the rail.
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Old Jun 8th, 2014, 11:04 PM
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okay ill try that out in the morning, thanks a million.
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Old Jun 9th, 2014, 04:51 PM
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@minitech93 so there doesn't seem to be fuel getting to the rail, i manually but petrol into it and the car fired up but then died a couple of seconds later so im guessing it if the fuel pump
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Old Jun 9th, 2014, 08:21 PM
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so i had it looked at and and it's definitely the fuel pump that has failed. Does anyone know if i can get this refurbished? BMW quoting me 780 for the pump but if i give them my old pump i will get it for 680. Would it be much cheaper to get it done from a NON-BMW garage
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Old Jun 9th, 2014, 10:48 PM
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Quote: Originally Posted by man-child (original)
@Minitech93

Im not getting any fault codes coming up whatsoever

Hope this doesn't sound patronising, You are using a fault code reader? I cant believe a faulty pump or no fuel wouldn't throw up a fault code.
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Old Jun 10th, 2014, 08:13 AM
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It may not throw up a fault code of it's pumping fuel
But not got enough pressure, because it is pumping just not bad enough then it may not record a code, also it not firing up a code will
Be harder to be recorded, the best obd tool here would be the use of
Live data.

And I am not to sure if you can get ur fuel pump recond, but would recommend a genuine pump, seeing it's last over 10years since it was built.
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Old Jun 10th, 2014, 09:38 PM
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@drozd Nope don't find that patronizing at all but no i wasn't i had made the silly mistake of thinking i would get a fault code coming up on the dash TOTAL NEWB, queue clapping and fits of laughter!!

@Minitech93 i have it booked in to get it done tomorrow, found another BMW specialist near by that will do it for half the price. CHUFFED!
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