In the event you are alert of unusual symptoms on your vehicle, you are right to be worried, because a car represents a huge annual budget and unexpected malfunctions don’t reduce the expenses. So what if you sense that you have a leaking injector on your Jeep Patriot? You likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or unusual black smoke. These three manifestations are the main indicators of a leaking injector. As this troubles can cause more serious engine trouble on your car, we decided to prepare this article content to help you ensure the failure of a leaking injector and treat it properly. To do so, we will first look at the case of gasoline injectors and then at those of diesel injectors Jeep Patriot.
Leaking injector on my petrol Jeep Patriot
It is essential to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two sort of engines makes the injection different. 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 Jeep Patriot: The different leaks
It should be said that injector leaks on a Jeep Patriot equipped with a petrol engine are rather rare. This is because of the much lower pressure in the petrol intake systems. Nevertheless, 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 portion 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 part 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 Jeep Patriot
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 Jeep Patriot: The different leaks
In the case of leaking diesel injectors on your Jeep Patriot, there are three different sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform over time, generally 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 Jeep Patriot 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 annoying, 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 verifying you have oil leaking but it does not come from your injectors, we advise you to consult this article content on the presence of oil leaking on your Jeep Patriot.
Leaking injector on my Jeep Patriot, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Frequently a leak is connected, as we have seen sooner, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is carried out…
- 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 frequently be limited 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 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 tiniest doubt in the treatment of your injector that leaks on your Jeep Patriot, we advise you to get closer to your motor mechanic to avoid any bad handling that could significantly harm the condition of your Jeep Patriot.
If you wish more guides on the Jeep Patriot, go to our Jeep Patriot category.
