In the event you are alert of abnormal signs on your car, you are right to be intrigued, because a car represents a massive annual budget and surprising malfunctions don’t lower the bill. So what if you feel as if you have a leaking injector on your Chrysler Pacifica? You most likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or strange black smoke. These three manifestations are the main signs of a leaking injector. As this failure can lead to more severe engine complications on your car, we decided to publish this article to help you verify the failure of a leaking injector and deal with it properly. To achieve this, we will initially look at the case of gasoline injectors and then at those of diesel injectors Chrysler Pacifica.
Leaking injector on my petrol Chrysler Pacifica
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 main 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 Chrysler Pacifica: The different leaks
It should be said that injector leaks on a Chrysler Pacifica equipped with a petrol engine are rather rare. This is because of 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 conceivable that you have a leak from the top of the injector, this is the part that is linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may suffer a leak coming from the lower part of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Chrysler Pacifica
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Chrysler Pacifica: The different leaks
In the case of leaking diesel injectors on your Chrysler Pacifica, there are three different sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform after a while, 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 Chrysler Pacifica 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 experience an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we recommend you to read this article on the presence of oil leaking on your Chrysler Pacifica.
Leaking injector on my Chrysler Pacifica, 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 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 safety measures:
- Lower the pressure before any work is achieved…
- 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 restricted to replacing the seals that have failed:
- Find 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 situations, these interventions are not automatically difficult, but if you have the smallest doubt in the treatment of your injector that leaks on your Chrysler Pacifica, we recommend you to get closer to your motor mechanic to avoid any bad handling that could significantly harm the condition of your Chrysler Pacifica.
If you wish more guides on the Chrysler Pacifica, go to our Chrysler Pacifica category.
