Whenever you are informed of unusual signs on your car, you are right to be worried, because a car represents a big annual budget and sudden malfunctions don’t reduce the expenses. So what if you think that you have a leaking injector on your Fiat Scudo? You almost certainly 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 symptoms of a leaking injector. As this troubles can end up in more significant engine trouble on your car, we chose to publish this content page to help you ensure the failure of a leaking injector and handle it correctly. To accomplish this, we will first of all look at the case of gasoline injectors and then at those of diesel injectors Fiat Scudo.
Leaking injector on my petrol Fiat Scudo
It is essential to know that the injectors on petrol and diesel engines are different, actually, 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 Fiat Scudo: The different leaks
It should be mentioned that injector leaks on a Fiat Scudo equipped with a petrol engine are pretty infrequent. This is as a result of the much lower pressure in the petrol intake systems. Even so, 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 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 sooner.
Leaking injector on my diesel Fiat Scudo
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 Fiat Scudo: The different leaks
In the case of leaking diesel injectors on your Fiat Scudo, there are three different types of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform with time, generally 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 Fiat Scudo 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 bothersome, 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 recommend you to browse this content page on the existence of oil leaking on your Fiat Scudo.
Leaking injector on my Fiat Scudo, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Very often a leak is linked, as we have seen previously, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some precautions:
- 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.
Relating to the repair part of your leak, it will oftentimes be limited to replacing the seals that have failed:
- Find the source of the leak
- Dismantle the injector in question
- Replace the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all situations, these interventions are not inevitably very hard, but if you have the tiniest doubt in the treatment of your injector that leaks on your Fiat Scudo, we recommend you to get closer to your auto technician to avoid any bad manipulation that could seriously harm the condition of your Fiat Scudo.
To find more tips on the Fiat Scudo, take a look at the Fiat Scudo category.
