In the event you are informed of irregular symptoms on your automobile, you are right to be worried, because a car represents a massive annual budget and unpredicted breakdowns don’t lower the bill. So what if you find that you have a leaking injector on your Subaru Crosstrek? You most likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or strange black smoke. These three signs of illness are the main indicators of a leaking injector. As this problem can bring on more significant engine concerns on your car, we thought we would compose this article to help you verify the failure of a leaking injector and treat it properly. To do this, we will initially look at the circumstance of gasoline injectors and then at those of diesel injectors Subaru Crosstrek.
Leaking injector on my petrol Subaru Crosstrek
It is fundamental 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 main 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 Subaru Crosstrek: The different leaks
It should be known that injector leaks on a Subaru Crosstrek equipped with a petrol engine are pretty infrequent. This is because of the much lower pressure in the petrol intake systems. Nevertheless, 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 experience 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 before.
Leaking injector on my diesel Subaru Crosstrek
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 Subaru Crosstrek: The different leaks
In the circumstance of leaking diesel injectors on your Subaru Crosstrek, there are three several sort of leaks:
- Leakage from the injector inlet:
In cases like this, 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 indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Subaru Crosstrek 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 find an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we recommend you to browse this article on the existence of oil leaking on your Subaru Crosstrek.
Leaking injector on my Subaru Crosstrek, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Frequently a leak is associated, as we have seen previously, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is done…
- Covering 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 oftentimes be restricted to replacing the seals that have failed:
- Situate 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 accordance with the manufacturer’s standards.
In all cases, these interventions are not automatically complex, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Subaru Crosstrek, we recommend you to get closer to your mechanic to avoid any bad manipulation that could critically harm the condition of your Subaru Crosstrek.
Whenever you have any further questions about the Subaru Crosstrek, do not hesitate to consult our Subaru Crosstrek category.
