Whenever you are alert of abnormal symptoms on your automobile, you are right to be concerned, because a car represents a massive annual budget and surprising breakdowns don’t reduce the bill. So what if you feel as if you have a leaking injector on your Renault Laguna 2? You probably figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or strange black smoke. These three symptoms are the main signs of a leaking injector. As this troubles can produce more serious engine complications on your car, we decided to prepare this content page to help you confirm the failure of a leaking injector and handle it correctly. To do so, we will first check out the case of gasoline injectors and then at those of diesel injectors Renault Laguna 2.
Leaking injector on my petrol Renault Laguna 2
It is fundamental to know that the injectors on petrol and diesel engines are distinct, the truth is, the difference in combustion between these two sort of engines makes the injection distinct. 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 Renault Laguna 2: The different leaks
It should be known that injector leaks on a Renault Laguna 2 equipped with a petrol engine are rather infrequent. This is resulting from 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 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 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 sooner.
Leaking injector on my diesel Renault Laguna 2
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 Renault Laguna 2: The different leaks
In the case of leaking diesel injectors on your Renault Laguna 2, there are three different sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform over time, usually the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Renault Laguna 2 will be the result 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 experience an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we suggest you to browse this content page on the presence of oil leaking on your Renault Laguna 2.
Leaking injector on my Renault Laguna 2, 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 connected, as we have seen sooner, to a worn seal because of the pressures endured. But think that the pressure in the circuit is gigantic, specifically on diesel engines. So you will have to take some safety 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.
Relating to the repair part of your leak, it will frequently be restricted 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 set up and tighten with a torque wrench in respect with the manufacturer’s standards.
In all cases, these interventions are not specifically very hard, but if you have the smallest hesitation in the treatment of your injector that leaks on your Renault Laguna 2, we suggest you to get closer to your auto mechanic to avoid any bad handling that could seriously harm the condition of your Renault Laguna 2.
In the event that you have any further questions about the Renault Laguna 2, do not hesitate to consult our Renault Laguna 2 category.
