In the event you are alert of abnormal signs on your car, you are right to be intrigued, because a car represents a huge annual budget and surprising breakdowns don’t reduce the costs. So what if you feel as if you have a leaking injector on your Volkswagen Amarok? You almost certainly figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or unusual black smoke. These three symptoms are the main indicators of a leaking injector. As this failure can bring on more significant engine concerns on your car, we made a decision to produce this content to help you verify the failure of a leaking injector and treat it correctly. To achieve this, we will first of all look at the circumstance of gasoline injectors and then at those of diesel injectors Volkswagen Amarok.
Leaking injector on my petrol Volkswagen Amarok
It is fundamental to know that the injectors on petrol and diesel engines are distinct, actually, the difference in combustion between these two sort of engines makes the injection distinct. The key 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 Volkswagen Amarok: The different leaks
It should be noted that injector leaks on a Volkswagen Amarok equipped with a petrol engine are rather rare. This is because of the much lower pressure in the petrol intake systems. Even so, there are two sort 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 portion of the injector of your car, this one will come from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Volkswagen Amarok
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system creates 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 Volkswagen Amarok: The different leaks
In the circumstance of leaking diesel injectors on your Volkswagen Amarok, there are three several sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform in the long run, commonly 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 Volkswagen Amarok 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 troublesome, 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 checking you have oil leaking but it does not come from your injectors, we suggest you to read this content on the presence of oil leaking on your Volkswagen Amarok.
Leaking injector on my Volkswagen Amarok, how to fix the leak
And at last, we’re going to look at how to fix a leaking injector on your car. Very often a leak is linked, as we have seen prior to this, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is monumental, specifically on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is conducted…
- 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 very often be restricted to swapping the seals that have failed:
- Situate the source of the leak
- Dismantle the injector in question
- Change the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in respect with the manufacturer’s standards.
In all situations, these interventions are not specifically very hard, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Volkswagen Amarok, we suggest you to get closer to your repair shop to avoid any bad manipulation that could significantly harm the condition of your Volkswagen Amarok.
If you wish more guides on the Volkswagen Amarok, go to our Volkswagen Amarok category.
