In cases where you are informed of abnormal symptoms on your automobile, you are right to be preoccupied, because a car represents a big annual budget and surprising malfunctions don’t reduce the bill. So what if you feel as if you have a leaking injector on your Nissan Cabstar? You almost certainly figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or uncommon black smoke. These three signs of illness are the main signals of a leaking injector. As this failure can end up in more significant engine problems on your car, we thought we would write this content to help you ensure the failure of a leaking injector and deal with it correctly. To accomplish this, we will first look into the circumstance of gasoline injectors and then at those of diesel injectors Nissan Cabstar.
Leaking injector on my petrol Nissan Cabstar
It is important to know that the injectors on petrol and diesel engines are different, in fact, the difference in combustion between these two types of engines makes the injection different. 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 Nissan Cabstar: The different leaks
It should be mentioned that injector leaks on a Nissan Cabstar equipped with a petrol engine are rather rare. This is resulting from the much lower pressure in the petrol intake systems. Nevertheless, there are two types 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 portion that is connected to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may experience 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 before.
Leaking injector on my diesel Nissan Cabstar
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 Nissan Cabstar: The different leaks
In the circumstance of leaking diesel injectors on your Nissan Cabstar, there are three different types of leaks:
- Leakage from the injector inlet:
In this instance, 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 implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Nissan Cabstar 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 annoying, 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 checking you have oil leaking but it does not come from your injectors, we suggest you to browse this content on the existence of oil leaking on your Nissan Cabstar.
Leaking injector on my Nissan Cabstar, how to fix the leak
And finally, we’re going to look into how to fix a leaking injector on your car. Oftentimes a leak is connected, as we have seen previously, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is enormous, specifically on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is done…
- Covering 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 oftentimes be limited to changing the seals that have failed:
- Discover the source of the leak
- Dismantle 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 cases, these interventions are not necessarily difficult, but if you have the smallest doubt in the treatment of your injector that leaks on your Nissan Cabstar, we suggest you to get closer to your auto mechanic to avoid any bad manipulation that could severely harm the condition of your Nissan Cabstar.
If perhaps you have any further questions about the Nissan Cabstar, do not hesitate to consult our Nissan Cabstar category.
