Whenever you are aware of unusual symptoms on your automobile, you are right to be preoccupied, because a car represents a huge annual budget and unforeseen malfunctions don’t reduce the expenses. So what if you find that you have a leaking injector on your Opel Mokka X? You probably figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or strange black smoke. These three signs of illness are the main indicators of a leaking injector. As this failure can cause more severe engine trouble on your car, we decided to produce this article to help you ensure the failure of a leaking injector and treat it correctly. To do so, we will first of all look into the case of gasoline injectors and then at those of diesel injectors Opel Mokka X.
Leaking injector on my petrol Opel Mokka X
It is essential to know that the injectors on petrol and diesel engines are distinct, in reality, the difference in combustion between these two kind of engines makes the injection distinct. The essential 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 Opel Mokka X: The different leaks
It should be known that injector leaks on a Opel Mokka X equipped with a petrol engine are pretty infrequent. This is caused by 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 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 part of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Opel Mokka X
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Opel Mokka X: The different leaks
In the case of leaking diesel injectors on your Opel Mokka X, there are three different kind of leaks:
- Leakage from the injector inlet:
In this case, 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 relates to the management of the fuel return in the injector, this time the injector that leaks on your Opel Mokka X 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 annoying, 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 encourage you to browse this article on the existence of oil leaking on your Opel Mokka X.
Leaking injector on my Opel Mokka X, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is associated, as we have seen previously, to a worn seal as a result of the pressures endured. But think that the pressure in the circuit is enormous, specifically on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is completed…
- 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 oftentimes be limited to changing the seals that have failed:
- Identify the source of the leak
- Take apart the injector in question
- Replace the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.
In all cases, these interventions are not automatically very hard, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Opel Mokka X, we encourage you to get closer to your mechanic to avoid any bad handling that could significantly harm the condition of your Opel Mokka X.
If you need more guides on the Opel Mokka X, go to our Opel Mokka X category.
