Whenever you are alert of unusual symptoms on your car, you are right to be concerned, because a car represents a massive annual budget and unpredicted malfunctions don’t reduce the expenses. So what if you sense that you have a leaking injector on your Suzuki Grand Vitara? You almost certainly figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unconventional black smoke. These three signs of illness are the main signals of a leaking injector. As this failure can lead to more serious engine concerns on your car, we thought we would write this article to help you verify the failure of a leaking injector and treat it correctly. To do this, we will initially look into the circumstance of gasoline injectors and then at those of diesel injectors Suzuki Grand Vitara.
Leaking injector on my petrol Suzuki Grand Vitara
It is crucial to know that the injectors on petrol and diesel engines are distinct, in reality, 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 Suzuki Grand Vitara: The different leaks
It should be noted that injector leaks on a Suzuki Grand Vitara equipped with a petrol engine are pretty infrequent. This is because of the much lower pressure in the petrol intake systems. Even so, 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 part 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 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 before.
Leaking injector on my diesel Suzuki Grand Vitara
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 Suzuki Grand Vitara: The different leaks
In the circumstance of leaking diesel injectors on your Suzuki Grand Vitara, there are three different sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform over time, commonly 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 Suzuki Grand Vitara will be caused by 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 encounter 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 existence of oil leaking on your Suzuki Grand Vitara.
Leaking injector on my Suzuki Grand Vitara, how to fix the leak
And finally, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is associated, as we have seen prior to this, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is enormous, specifically 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.
Concerning the repair part of your leak, it will regularly be limited to changing the seals that have failed:
- Discover 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 situations, these interventions are not inevitably difficult, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Suzuki Grand Vitara, we advise you to get closer to your auto technician to avoid any bad manipulation that could severely harm the condition of your Suzuki Grand Vitara.
To find more tips on the Suzuki Grand Vitara, take a look at the Suzuki Grand Vitara category.
