In the event that you are alert of abnormal signs on your automobile, you are right to be intrigued, because a car represents a massive annual budget and unexpected breakdowns don’t reduce the costs. So what if you sense that you have a leaking injector on your BMW X6? You likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or uncommon black smoke. These three manifestations are the main signals of a leaking injector. As this troubles can bring about more severe engine problems on your car, we decided to produce this content to help you ensure the failure of a leaking injector and treat it correctly. To do this, we will initially take a look at the case of gasoline injectors and then at those of diesel injectors BMW X6.
Leaking injector on my petrol BMW X6
It is crucial to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two sort of engines makes the injection different. The key 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 BMW X6: The different leaks
It should be mentioned that injector leaks on a BMW X6 equipped with a petrol engine are pretty infrequent. This is as a result of the much lower pressure in the petrol intake systems. However, there are two sort of leaks:
- Leakage from the top of the injector:
It is conceivable 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:
Finally, you may encounter a leak coming from the lower part of the injector of your car, this one will come from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel BMW X6
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure generates 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 BMW X6: The different leaks
In the case of leaking diesel injectors on your BMW X6, there are three several sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform with time, in most cases 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 BMW X6 will be caused 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 encounter an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we suggest you to consult this content on the existence of oil leaking on your BMW X6.
Leaking injector on my BMW X6, how to fix the leak
And finally, we’re going to take a look at how to fix a leaking injector on your car. Oftentimes a leak is linked, as we have seen prior to this, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is achieved…
- Covering 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 very often be restricted to replacing the seals that have failed:
- Locate 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 complex, but if you have the slightest hesitation in the treatment of your injector that leaks on your BMW X6, we suggest you to get closer to your auto mechanic to avoid any bad handling that could critically harm the condition of your BMW X6.
If you need more guides on the BMW X6, go to our BMW X6 category.
