In the event that you are alert of unusual symptoms on your automobile, you are right to be worried, because a car represents a huge annual budget and surprising breakdowns don’t lower the expenses. So what if you think that you have a leaking injector on your Volvo S60? You likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or abnormal black smoke. These three manifestations are the main signals of a leaking injector. As this troubles can end up in more significant engine complications on your car, we decided to produce this article to help you confirm the failure of a leaking injector and treat it properly. To accomplish this, we will first look at the circumstance of gasoline injectors and then at those of diesel injectors Volvo S60.
Leaking injector on my petrol Volvo S60
It is fundamental 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 Volvo S60: The different leaks
It should be mentioned that injector leaks on a Volvo S60 equipped with a petrol engine are rather infrequent. This is because of the much lower pressure in the petrol intake systems. Even so, 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 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 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 S60
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 Volvo S60: The different leaks
In the circumstance of leaking diesel injectors on your Volvo S60, there are three different kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform with time, commonly 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 S60 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 experience an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we encourage you to browse this article on the presence of oil leaking on your Volvo S60.
Leaking injector on my Volvo S60, how to fix the leak
And to finish, we’re going to look at how to fix a leaking injector on your car. Frequently a leak is linked, as we have seen sooner, to a worn seal as a result of the pressures suffered. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is completed…
- 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 oftentimes be limited 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 accordance with the manufacturer’s standards.
In all situations, these interventions are not inevitably difficult, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Volvo S60, we encourage you to get closer to your auto mechanic to avoid any bad handling that could seriously harm the condition of your Volvo S60.
If you wish more tutorials on the Volvo S60, go to our Volvo S60 category.
