In the event you are alert of irregular symptoms on your car, you are right to be intrigued, because a car represents a massive annual budget and unpredicted malfunctions don’t lower the costs. So what if you sense that you have a leaking injector on your Honda Fit? You likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or abnormal black smoke. These three symptoms are the main symptoms of a leaking injector. As this problem can lead to more serious engine problems on your car, we decided to produce this article to help you validate the failure of a leaking injector and deal with it correctly. To accomplish this, we will initially look at the circumstance of gasoline injectors and then at those of diesel injectors Honda Fit.
Leaking injector on my petrol Honda Fit
It is crucial to know that the injectors on petrol and diesel engines are different, in fact, the difference in combustion between these two kind 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 Honda Fit: The different leaks
It should be said that injector leaks on a Honda Fit equipped with a petrol engine are rather infrequent. This is due to the much lower pressure in the petrol intake systems. Nevertheless, there are two kind 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 portion that is connected 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 come from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Honda Fit
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 Honda Fit: The different leaks
In the circumstance of leaking diesel injectors on your Honda Fit, there are three different kind of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform after a while, 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 Honda Fit 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 find an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we advise you to consult this article on the presence of oil leaking on your Honda Fit.
Leaking injector on my Honda Fit, how to fix the leak
And to finish, we’re going to look at how to fix a leaking injector on your car. Regularly 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 enormous, specifically on diesel engines. So you will have to take some safety measures:
- 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.
Relating to the repair part of your leak, it will oftentimes be limited to swapping the seals that have failed:
- Find out 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 respect with the manufacturer’s standards.
In all cases, these interventions are not automatically complex, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Honda Fit, we advise you to get closer to your auto technician to avoid any bad manipulation that could significantly harm the condition of your Honda Fit.
If you wish more tutorials on the Honda Fit, go to our Honda Fit category.
