In cases where you are informed of abnormal symptoms on your car, you are right to be intrigued, because a car represents a massive annual budget and surprising malfunctions don’t reduce the costs. So what if you feel as if you have a leaking injector on your volvo v40? You almost certainly figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or uncommon black smoke. These three symptoms are the main signals of a leaking injector. As this failure can end up in more serious engine complications on your car, we thought we would produce this content page to help you verify the failure of a leaking injector and deal with it correctly. To accomplish this, we will first of all look into the case of gasoline injectors and then at those of diesel injectors volvo v40.
Leaking injector on my petrol volvo v40
It is crucial to know that the injectors on petrol and diesel engines are distinct, actually, the difference in combustion between these two types 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 volvo v40: The different leaks
It should be noted that injector leaks on a volvo v40 equipped with a petrol engine are pretty infrequent. This is resulting from the much lower pressure in the petrol intake systems. Even so, there are two types 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 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 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 volvo v40
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 volvo v40: The different leaks
In the case of leaking diesel injectors on your volvo v40, there are three different types 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 relates to the management of the fuel return in the injector, this time the injector that leaks on your volvo v40 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 troublesome, 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 examining you have oil leaking but it does not come from your injectors, we advise you to browse this content page on the existence of oil leaking on your volvo v40.
Leaking injector on my volvo v40, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Very often a leak is associated, as we have seen sooner, to a worn seal due to the pressures endured. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some safety 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.
Regarding the repair part of your leak, it will regularly be restricted to replacing the seals that have failed:
- Identify the source of the leak
- Take apart the injector in question
- Change the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.
In all situations, these interventions are not necessarily difficult, but if you have the tiniest doubt in the treatment of your injector that leaks on your volvo v40, we advise you to get closer to your auto technician to avoid any bad manipulation that could seriously harm the condition of your volvo v40.
If you have any further questions about the volvo v40, do not hesitate to consult our volvo v40 category.
