If you are informed of abnormal symptoms on your automobile, you are right to be concerned, because a car represents a massive annual budget and unpredicted malfunctions don’t reduce the expenses. So what if you think that you have a leaking injector on your Mercedes Benz Sprinter? You likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or unusual black smoke. These three symptoms are the main indicators of a leaking injector. As this troubles can produce more critical engine concerns on your car, we chose to prepare this content to help you validate the failure of a leaking injector and deal with it correctly. To do this, we will first of all look into the circumstance of gasoline injectors and then at those of diesel injectors Mercedes Benz Sprinter.
Leaking injector on my petrol Mercedes Benz Sprinter
It is important to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two sort of engines makes the injection different. The main 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 Mercedes Benz Sprinter: The different leaks
It should be noted that injector leaks on a Mercedes Benz Sprinter equipped with a petrol engine are rather rare. This is caused by the much lower pressure in the petrol intake systems. However, 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 connected to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may encounter a leak coming from the lower portion 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 Mercedes Benz Sprinter
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Mercedes Benz Sprinter: The different leaks
In the circumstance of leaking diesel injectors on your Mercedes Benz Sprinter, there are three several sort of leaks:
- Leakage from the injector inlet:
In cases like this, 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 reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Mercedes Benz Sprinter 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 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 examining you have oil leaking but it does not come from your injectors, we advise you to consult this content on the presence of oil leaking on your Mercedes Benz Sprinter.
Leaking injector on my Mercedes Benz Sprinter, how to fix the leak
And finally, we’re going to look into how to fix a leaking injector on your car. Frequently a leak is associated, as we have seen previously, to a worn seal as a result of the pressures suffered. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some precautions:
- 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.
Relating to the repair part of your leak, it will frequently be restricted to swapping the seals that have failed:
- Find out 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 accordance with the manufacturer’s standards.
In all cases, these interventions are not necessarily complex, but if you have the smallest uncertainty in the treatment of your injector that leaks on your Mercedes Benz Sprinter, we advise you to get closer to your repair shop to avoid any bad manipulation that could significantly harm the condition of your Mercedes Benz Sprinter.
If you want more tutorials on the Mercedes Benz Sprinter, go to our Mercedes Benz Sprinter category.
