In cases where you are aware of unusual signs on your vehicle, you are right to be concerned, because a car represents a massive annual budget and sudden malfunctions don’t lower the costs. So what if you think that you have a leaking injector on your Peugeot 309? You likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or unusual black smoke. These three symptoms are the main indicators of a leaking injector. As this troubles can bring on more serious engine trouble on your car, we made a decision to write this content to help you verify the failure of a leaking injector and handle it properly. To achieve this, we will first look at the case of gasoline injectors and then at those of diesel injectors Peugeot 309.
Leaking injector on my petrol Peugeot 309
It is vital to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two kind of engines makes the injection distinct. The essential 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 Peugeot 309: The different leaks
It should be said that injector leaks on a Peugeot 309 equipped with a petrol engine are rather rare. This is caused by the much lower pressure in the petrol intake systems. However, 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 component that is attached 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 occur from the junction with the engine and not with the rail as seen before.
Leaking injector on my diesel Peugeot 309
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure creates 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 Peugeot 309: The different leaks
In the case of leaking diesel injectors on your Peugeot 309, there are three several 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 suggests, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Peugeot 309 will be a consequence of 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 feel an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we suggest you to read this content on the existence of oil leaking on your Peugeot 309.
Leaking injector on my Peugeot 309, how to fix the leak
And to finish, 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 due to the pressures endured. But think that the pressure in the circuit is monumental, specifically on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is achieved…
- Masking 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 changing the seals that have failed:
- Situate the source of the leak
- Take apart the injector in question
- Replace the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all situations, these interventions are not specifically complex, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Peugeot 309, we suggest you to get closer to your mechanic to avoid any bad handling that could severely harm the condition of your Peugeot 309.
If perhaps you have any additional questions about the Peugeot 309, do not hesitate to consult our Peugeot 309 category.
