If you are alert of irregular signs on your car, you are right to be worried, because a car represents a huge annual budget and unpredicted malfunctions don’t reduce the expenses. So what if you find that you have a leaking injector on your Ford Fiesta? You almost certainly figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or uncommon black smoke. These three manifestations are the main signs of a leaking injector. As this failure can bring about more severe engine concerns on your car, we made a decision to produce this article to help you verify the failure of a leaking injector and treat it properly. To accomplish this, we will first look into the circumstance of gasoline injectors and then at those of diesel injectors Ford Fiesta.
Leaking injector on my petrol Ford Fiesta
It is crucial to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two types of engines makes the injection different. The biggest 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 Ford Fiesta: The different leaks
It should be known that injector leaks on a Ford Fiesta equipped with a petrol engine are rather rare. This is due to the much lower pressure in the petrol intake systems. However, there are two types 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 part 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 come from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Ford Fiesta
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Ford Fiesta: The different leaks
In the circumstance of leaking diesel injectors on your Ford Fiesta, there are three several types of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform in the long run, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Ford Fiesta will be brought on 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 feel an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we encourage you to browse this article on the presence of oil leaking on your Ford Fiesta.
Leaking injector on my Ford Fiesta, 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 associated, as we have seen prior to this, to a worn seal due to the pressures endured. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some safety measures:
- 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.
Concerning the repair part of your leak, it will oftentimes be limited to swapping the seals that have failed:
- Identify the source of the leak
- Take apart 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 specifically very hard, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Ford Fiesta, we encourage you to get closer to your auto mechanic to avoid any bad manipulation that could seriously harm the condition of your Ford Fiesta.
If you need more tutorials on the Ford Fiesta, go to our Ford Fiesta category.
