If you are informed of abnormal signs on your automobile, you are right to be worried, because a car represents a massive annual budget and surprising breakdowns don’t reduce the expenses. So what if you feel like you have a leaking injector on your Bmw Z4? You almost certainly figured it out thanks to black/oily drips along your engine, or a troubled idle, or unusual black smoke. These three manifestations are the main symptoms of a leaking injector. As this failure can bring on more serious engine complications on your car, we thought we would compose this article content to help you verify the failure of a leaking injector and handle it properly. To do this, we will first of all check out the circumstance of gasoline injectors and then at those of diesel injectors Bmw Z4.
Leaking injector on my petrol Bmw Z4
It is important to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two kind of engines makes the injection different. The biggest 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 Bmw Z4: The different leaks
It should be noted that injector leaks on a Bmw Z4 equipped with a petrol engine are rather rare. This is resulting from the much lower pressure in the petrol intake systems. Nevertheless, there are two kind 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 portion that is connected to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may encounter a leak coming from the lower portion of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen before.
Leaking injector on my diesel Bmw Z4
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 Z4: The different leaks
In the circumstance of leaking diesel injectors on your Bmw Z4, there are three different kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform after a while, commonly the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Bmw Z4 will be a consequence of 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 feel 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 article content on the existence of oil leaking on your Bmw Z4.
Leaking injector on my Bmw Z4, how to fix the leak
And at last, we’re going to check out how to fix a leaking injector on your car. Frequently a leak is linked, as we have seen previously, to a worn seal due to the pressures endured. But think that the pressure in the circuit is enormous, especially on diesel engines. So you will have to take some precautions:
- 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.
Relating to the repair part of your leak, it will oftentimes be limited to replacing the seals that have failed:
- Situate 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 cases, these interventions are not necessarily complicated, but if you have the smallest doubt in the treatment of your injector that leaks on your Bmw Z4, we suggest you to get closer to your mechanic to avoid any bad manipulation that could critically harm the condition of your Bmw Z4.
To find more tips on the Bmw Z4, take a look at the Bmw Z4 category.
