MINI Cooper Forum banner

1 - 10 of 10 Posts

·
Registered
Joined
·
6 Posts
Discussion Starter #1
Hi Everyone.. i just bought a car from a dealership in Sydney.. the car runs great.. its a 2009 mini cooper r56 d turbo... the last two days it has had problems starting in the morning...it cranks over but dosnt start until a number of attempts..thers no warrantywith the car which is suss..after it starts it runs great and when im at the lights with the clutch out it stops and starts fine...anyone else have this problem and if so what was it?.. the service light comes on but goes out when running .. thanks
 

·
Registered
Joined
·
189 Posts
Poor starting diesels are often due to glow plug issues. Those engines commonly have faults with the glow plug controller which doesn't necessarily turn the.engine check light on. Worth getting the fault codes read.
 

·
Registered
Joined
·
180 Posts
Have had an old fuel line seeping overnight and drawing air in the system. Same symptoms as you fine all day just didn't want to start in the morning.
 

·
Registered
Joined
·
6 Posts
Discussion Starter #4
Poor starting diesels are often due to glow plug issues. Those engines commonly have faults with the glow plug controller which doesn't necessarily turn the.engine check light on. Worth getting the fault codes read.
Ok cool seeing the on monday... thank You guys for the imput cheers
 

·
Registered
Joined
·
189 Posts
Have had an old fuel line seeping overnight and drawing air in the system. Same symptoms as you fine all day just didn't want to start in the morning.
Yep, a duff fuel line can cause similar. As can a faulty fuel pressure regulator. Easy to check for this though, just cycle the ignition on and off a few times (pausing to allow the fuel pump to prime) prior to cranking. This could also allow lazy glow plugs to heat up though so if it starts sharply you still don't know the cause without testing the rail pressure.
 

·
Registered
Joined
·
180 Posts
Yep, a duff fuel line can cause similar. As can a faulty fuel pressure regulator. Easy to check for this though, just cycle the ignition on and off a few times (pausing to allow the fuel pump to prime) prior to cranking. This could also allow lazy glow plugs to heat up though so if it starts sharply you still don't know the cause without testing the rail pressure.
Again have had faulty pressure regulator but that was at every start not just overnight.
It could be one of many things but online all you can do is offer suggestions.
 

·
Registered
Joined
·
5,384 Posts
its also possible a injector is breaking down they are piezo type and are prone to failure or inner seal and it bleeds off rail pressure on cranking, live data run and watch what rail pressure you have it should be 200-250bar ish on cranking, if very low then pressure reg on fuel pump, injector issue do bleed off test, also live data will show all the injectors duty times with mg's ie milligrams per second of fuel on each injector, ie looking for a that stand out ie is 3 show minus 0.2 and one says minus 0.20 then that would be the cylinder that needs looking at,, before throwing injector away worth buying some seafoam and add it neat to fuel filter then take for a good hard run ie 3k and above see if will clear the dirt if down to that,
glow plug relays fail a lot as do the glow plugs, heads up only ever try and remove the glow plugs with engine nice and hot more likely to snap off doing them cold, also the relay is same as Peugeot Citroen 1.6hdi same years ie 2006-2010 and are cheaper to buy
 

·
Registered
Joined
·
14 Posts
Yep, a duff fuel line can cause similar. As can a faulty fuel pressure regulator. Easy to check for this though, just cycle the ignition on xender discord omegle and off a few times (pausing to allow the fuel pump to prime) prior to cranking. This could also allow lazy glow plugs to heat up though so if it starts sharply you still don't know the cause without testing the rail pressure.
Ok cool seeing the mechanic on monday... thank You guys for the imput cheers
 

·
Registered
Joined
·
5,384 Posts
the 1.6hdi 2009 diesel engine does not have a in tank 12 volt fuel pump, it does not have electronic pump so switching the ignition on and off will not make any difference, the fuel is reliant on the fuel pipes being sealed and the high pressure pump has its own part f the pump that draws the fuel in to it ,, the later bmw n47 diesels after 2010 march do have in tank first stage fuel pumps, if you look on top of engine under the little square plastic panel there is a oblong plastic bleed ball that has a non return valve in it to prime the fuel, if before you try to start car you pump this ball maybe 20-30 times fast then start car and it starts right away chance are you have a air leak in fuel line somewhere, or maybe fuel filter has failed common on cheap filters
 
1 - 10 of 10 Posts
Top