In the event that you are alert of unusual signs on your vehicle, you are right to be preoccupied, because a car represents a big annual budget and unexpected breakdowns don’t reduce the bill. So what if you feel as if you have a leaking injector on your Mini Mini? You likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or strange black smoke. These three symptoms are the main signals of a leaking injector. As this troubles can bring about more serious engine complications on your car, we thought we would produce this content page to help you ensure the failure of a leaking injector and deal with it properly. To accomplish this, we will first of all look into the circumstance of gasoline injectors and then at those of diesel injectors Mini Mini.
Leaking injector on my petrol Mini Mini
It is essential to know that the injectors on petrol and diesel engines are distinct, in reality, the difference in combustion between these two types of engines makes the injection distinct. The biggest difference lies in the pressure undergone 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 Mini: The different leaks
It should be known that injector leaks on a Mini Mini equipped with a petrol engine are pretty rare. This is resulting from the much lower pressure in the petrol intake systems. Nevertheless, 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 linked 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 portion of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Mini Mini
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 Mini: The different leaks
In the circumstance of leaking diesel injectors on your Mini Mini, there are three different types of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform after a while, generally the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Mini Mini will be brought on by an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most bothersome, it is the junction between the engine and the injector nose that leaks at a copper seal, you should find an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we suggest you to read this content page on the presence of oil leaking on your Mini Mini.
Leaking injector on my Mini Mini, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Frequently a leak is associated, as we have seen sooner, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is achieved…
- Masking you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Relating to the repair part of your leak, it will frequently be restricted to changing the seals that have failed:
- Identify the source of the leak
- Dismantle the injector in question
- Replace the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all cases, these interventions are not specifically complicated, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Mini Mini, we suggest you to get closer to your mechanic to avoid any bad handling that could seriously harm the condition of your Mini Mini.
If you need more tutorials on the Mini Mini, go to our Mini Mini category.
