In the event you are alert of abnormal signs on your car, you are right to be worried, because a car represents a huge annual budget and sudden breakdowns don’t reduce the bill. So what if you feel as if you have a leaking injector on your Porsche 911? You almost certainly figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unconventional black smoke. These three symptoms are the main signs of a leaking injector. As this troubles can cause more severe engine concerns on your car, we made a decision to compose this article to help you ensure the failure of a leaking injector and deal with it correctly. To accomplish this, we will initially look into the circumstance of gasoline injectors and then at those of diesel injectors Porsche 911.
Leaking injector on my petrol Porsche 911
It is important to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two sort 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 Porsche 911: The different leaks
It should be said that injector leaks on a Porsche 911 equipped with a petrol engine are pretty infrequent. This is due to 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 possible that you have a leak from the top of the injector, this is the component 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 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 Porsche 911
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Porsche 911: The different leaks
In the circumstance of leaking diesel injectors on your Porsche 911, there are three several sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform over time, in most cases 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 Porsche 911 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 advise you to browse this article on the presence of oil leaking on your Porsche 911.
Leaking injector on my Porsche 911, how to fix the leak
And to finish, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen prior to this, to a worn seal because of the pressures endured. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is carried out…
- Covering 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 regularly be limited to replacing the seals that have failed:
- Find out the source of the leak
- Take apart the injector in question
- Replace the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all cases, these interventions are not necessarily complex, but if you have the smallest hesitation in the treatment of your injector that leaks on your Porsche 911, we advise you to get closer to your auto technician to avoid any bad manipulation that could severely harm the condition of your Porsche 911.
Whenever you have any additional questions about the Porsche 911, do not hesitate to consult our Porsche 911 category.
