In cases where you are alert of irregular symptoms on your vehicle, you are right to be worried, because a car represents a massive annual budget and unexpected breakdowns don’t lower the costs. So what if you think that you have a leaking injector on your Mini Countryman 2? You likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unusual black smoke. These three symptoms are the main indicators of a leaking injector. As this problem can bring on more critical engine problems on your car, we chose to prepare this content to help you validate the failure of a leaking injector and treat it correctly. To accomplish this, we will initially take a look at the circumstance of gasoline injectors and then at those of diesel injectors Mini Countryman 2.
Leaking injector on my petrol Mini Countryman 2
It is vital to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two types of engines makes the injection different. The key difference lies in the pressure experienced by the injectors, on a petrol engine it will vary between 3.5 bars for indirect injection and 120 bars for indirect injection.
Leaking injector on a petrol Mini Countryman 2: The different leaks
It should be known that injector leaks on a Mini Countryman 2 equipped with a petrol engine are pretty rare. This is because of the much lower pressure in the petrol intake systems. However, there are two types of leaks:
- Leakage from the top of the injector:
It is possible that you have a leak from the top of the injector, this is the part that is attached to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may suffer a leak coming from the lower part of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Mini Countryman 2
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure produces very high pressure in the engine, as do the injectors. On these models, the pressure is more than 10 times higher than on the direct injection of car petrol engines, reaching 1800 to 2000 bars.
Leaking injector on diesel Mini Countryman 2: The different leaks
In the circumstance of leaking diesel injectors on your Mini Countryman 2, there are three several types of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform over time, commonly the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Mini Countryman 2 will be the result of an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most annoying, it is the junction between the engine and the injector nose that leaks at a copper seal, you should feel an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we advise you to read this content on the presence of oil leaking on your Mini Countryman 2.
Leaking injector on my Mini Countryman 2, how to fix the leak
And at last, we’re going to take a look at how to fix a leaking injector on your car. Frequently a leak is connected, as we have seen previously, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is carried out…
- Masking you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Concerning the repair part of your leak, it will very often be limited to changing the seals that have failed:
- Identify the source of the leak
- Dismantle the injector in question
- Change the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in respect with the manufacturer’s standards.
In all situations, these interventions are not automatically difficult, but if you have the slightest hesitation in the treatment of your injector that leaks on your Mini Countryman 2, we advise you to get closer to your mechanic to avoid any bad handling that could seriously harm the condition of your Mini Countryman 2.
Whenever you have any further questions about the Mini Countryman 2, do not hesitate to consult our Mini Countryman 2 category.
