In the event that you are aware of irregular signs on your automobile, you are right to be intrigued, because a car represents a massive annual budget and unforeseen breakdowns don’t lower the costs. So what if you feel like you have a leaking injector on your Volkswagen Golf 2? You most likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or strange black smoke. These three signs of illness are the main indicators of a leaking injector. As this troubles can lead to more serious engine problems on your car, we decided to publish this content page to help you verify the failure of a leaking injector and treat it correctly. To do this, we will initially look at the case of gasoline injectors and then at those of diesel injectors Volkswagen Golf 2.
Leaking injector on my petrol Volkswagen Golf 2
It is crucial 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 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 Volkswagen Golf 2: The different leaks
It should be known that injector leaks on a Volkswagen Golf 2 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 possible that you have a leak from the top of the injector, this is the component that is attached 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 sooner.
Leaking injector on my diesel Volkswagen Golf 2
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 Volkswagen Golf 2: The different leaks
In the case of leaking diesel injectors on your Volkswagen Golf 2, there are three several sort of leaks:
- Leakage from the injector inlet:
In this case, 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 implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Volkswagen Golf 2 will be caused 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 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 consult this content page on the presence of oil leaking on your Volkswagen Golf 2.
Leaking injector on my Volkswagen Golf 2, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Oftentimes a leak is connected, as we have seen sooner, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some 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.
Concerning the repair part of your leak, it will oftentimes 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 situations, these interventions are not necessarily very hard, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Volkswagen Golf 2, we advise you to get closer to your repair shop to avoid any bad handling that could severely harm the condition of your Volkswagen Golf 2.
If you want more tutorials on the Volkswagen Golf 2, go to our Volkswagen Golf 2 category.
