If you are aware of abnormal symptoms on your car, you are right to be worried, because a car represents a huge annual budget and surprising malfunctions don’t lower the costs. So what if you feel like you have a leaking injector on your Bmw Serie 4 F32? You almost certainly figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unusual black smoke. These three manifestations are the main signals of a leaking injector. As this troubles can lead to more significant engine problems on your car, we thought we would produce this article to help you confirm the failure of a leaking injector and deal with it properly. To achieve this, we will initially look at the case of gasoline injectors and then at those of diesel injectors Bmw Serie 4 F32.
Leaking injector on my petrol Bmw Serie 4 F32
It is vital to know that the injectors on petrol and diesel engines are distinct, actually, the difference in combustion between these two kind of engines makes the injection distinct. The essential 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 Serie 4 F32: The different leaks
It should be said that injector leaks on a Bmw Serie 4 F32 equipped with a petrol engine are pretty rare. This is due to the much lower pressure in the petrol intake systems. However, there are two kind of leaks:
- Leakage from the top of the injector:
It is plausible that you have a leak from the top of the injector, this is the portion that is attached 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 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 Bmw Serie 4 F32
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system creates 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 Serie 4 F32: The different leaks
In the case of leaking diesel injectors on your Bmw Serie 4 F32, there are three different kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform as time passes, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Bmw Serie 4 F32 will be caused by an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most troublesome, 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 examining you have oil leaking but it does not come from your injectors, we encourage you to read this article on the existence of oil leaking on your Bmw Serie 4 F32.
Leaking injector on my Bmw Serie 4 F32, how to fix the leak
And to finish, we’re going to 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 as a result of the pressures endured. But think that the pressure in the circuit is enormous, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is done…
- Masking you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Regarding the repair part of your leak, it will regularly be restricted to swapping the seals that have failed:
- Discover the source of the leak
- Dismantle the injector in question
- Replace 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 specifically complicated, but if you have the smallest hesitation in the treatment of your injector that leaks on your Bmw Serie 4 F32, we encourage you to get closer to your motor mechanic to avoid any bad manipulation that could critically harm the condition of your Bmw Serie 4 F32.
To get more tips on the Bmw Serie 4 F32, take a look at the Bmw Serie 4 F32 category.
