Hello,
First of all i would like to apologize for the long post but it is all with the goal of better explanation.
Here is the problem i am experiencing with my car. The car in question is Grand Scenic 3d generation, 1.5dci with 110HP,2012 year, K9K 636 engine code.
Last year in March the problem started, the car started working univenly and smoking while running and the actual motor sounded like a tractor. Before that there were no signs of any problems, engine was working properly, gas mileage was normal (as before), no smoking for the exhaust. I bought the car in 2017 with 46k kilometers on it and have done just the regular service, oil and filters every 15k and at 60k we changed the fuel filter. When the problem started the car had around 105k kilometers.
I had it checked in official Renault garage and they said that all four injectors were bad and needed to be changed. They ordered the injectors, it was not the new ones but the factory refurbished ones. Before the installation of the injectors they checked the whole fuel system in order to see if everything is ok in order to give me the yearlong guarantee for the injectors after installation.
After the injectors were changed all was fine for about 3 months, cca 10k kilometers. Then I started to hear some tapping noise (like metal against metal) but only in the low revs, cca 1400-1600, and only in the first gear and reverse. As soon as the revs got higher the sound was gone. Otherwise the engine was running smoothly, no smoking from the exhaust, no stuttering and the fuel consumption didn’t go up. The noise wasn’t there all of the time so I didn’t think much of it and I continued driving the car.
Three months down the line, the noise started to be constant up till 2100RPMs, but otherwise no difference in engine performance.
Since I travel a lot and I have to depend on my car I went to the same garage to have it checked with the assumption that it might be the injectors, the noise was similar to the one from before but much quieter. The garage diagnosed the car and checked the injectors but everything was ok.
I had the mechanic drive the car with me and he heard the same noise and verified it sounded like a faulty injectors but since all was ok on the computer readout he said to wait and let the problem develop further so they can see what it could be, because of the data given by the computer her had no reason to change the injectors which were still under guarantee.
I wasn’t happy with their conclusion so I went to a different Renault dealer which did the same test and said the same thing that all is fine with the injectors but they also drove the car and noticed the noise but could not tell me what it was from.
I started seeking help from other mechanics, not official Renault mechanics but which were working on the Renault cars their whole life. To all of the the noise sounded like faulty injectors but they didn’t have the diagnostic system to check them. They advised me to try with the additives (injector cleaners) to see if that would help, but there was no change.
Since there was no change in the car performance and the injectors were still under warranty I continued to drive the car. The whole year almost passed and the car was working just fine but the noise was still there. Before the guarantee expired I went for one more check up to the Renault dealer, and after diagnosing the car they said all is fine, again.
I have researched Renault forums in Croatia (where I am from) and few people had the same problem like me, and also upon changing the injectors the noise came back just for them was much sooner than for me. They also went to tons of mechanist which diagnosed the car and all seem fine but also said that the noise coming from the engine sounds like injectors. Many people were saying that it is a tipical noise for this type of engine but we all could swear the noise wasn’t there before.
Anyways after pointless search for help we all kind of stopped searching for the solution and continued to drive the cars since there was no other change to the cars performance.
18 months after the injector were changed (September 2020), I started to feel the difference in the motor running.
So, that is the saga I have with the car, I hope it is not the injectors, since the warranty is out and if it is I wander what could have cause this development.
I am very thankful for any and all help with this. I have heard about the same problems people having with this engine type in the eastern Europe but they still have not found the solution, so if any among you do have some insight please write.
Many thanks, Vanja
First of all i would like to apologize for the long post but it is all with the goal of better explanation.
Here is the problem i am experiencing with my car. The car in question is Grand Scenic 3d generation, 1.5dci with 110HP,2012 year, K9K 636 engine code.
Last year in March the problem started, the car started working univenly and smoking while running and the actual motor sounded like a tractor. Before that there were no signs of any problems, engine was working properly, gas mileage was normal (as before), no smoking for the exhaust. I bought the car in 2017 with 46k kilometers on it and have done just the regular service, oil and filters every 15k and at 60k we changed the fuel filter. When the problem started the car had around 105k kilometers.
I had it checked in official Renault garage and they said that all four injectors were bad and needed to be changed. They ordered the injectors, it was not the new ones but the factory refurbished ones. Before the installation of the injectors they checked the whole fuel system in order to see if everything is ok in order to give me the yearlong guarantee for the injectors after installation.
After the injectors were changed all was fine for about 3 months, cca 10k kilometers. Then I started to hear some tapping noise (like metal against metal) but only in the low revs, cca 1400-1600, and only in the first gear and reverse. As soon as the revs got higher the sound was gone. Otherwise the engine was running smoothly, no smoking from the exhaust, no stuttering and the fuel consumption didn’t go up. The noise wasn’t there all of the time so I didn’t think much of it and I continued driving the car.
Three months down the line, the noise started to be constant up till 2100RPMs, but otherwise no difference in engine performance.
Since I travel a lot and I have to depend on my car I went to the same garage to have it checked with the assumption that it might be the injectors, the noise was similar to the one from before but much quieter. The garage diagnosed the car and checked the injectors but everything was ok.
I had the mechanic drive the car with me and he heard the same noise and verified it sounded like a faulty injectors but since all was ok on the computer readout he said to wait and let the problem develop further so they can see what it could be, because of the data given by the computer her had no reason to change the injectors which were still under guarantee.
I wasn’t happy with their conclusion so I went to a different Renault dealer which did the same test and said the same thing that all is fine with the injectors but they also drove the car and noticed the noise but could not tell me what it was from.
I started seeking help from other mechanics, not official Renault mechanics but which were working on the Renault cars their whole life. To all of the the noise sounded like faulty injectors but they didn’t have the diagnostic system to check them. They advised me to try with the additives (injector cleaners) to see if that would help, but there was no change.
Since there was no change in the car performance and the injectors were still under warranty I continued to drive the car. The whole year almost passed and the car was working just fine but the noise was still there. Before the guarantee expired I went for one more check up to the Renault dealer, and after diagnosing the car they said all is fine, again.
I have researched Renault forums in Croatia (where I am from) and few people had the same problem like me, and also upon changing the injectors the noise came back just for them was much sooner than for me. They also went to tons of mechanist which diagnosed the car and all seem fine but also said that the noise coming from the engine sounds like injectors. Many people were saying that it is a tipical noise for this type of engine but we all could swear the noise wasn’t there before.
Anyways after pointless search for help we all kind of stopped searching for the solution and continued to drive the cars since there was no other change to the cars performance.
18 months after the injector were changed (September 2020), I started to feel the difference in the motor running.
- First thing I noticed is that the car sometimes lost power at higher speed around 2200RPMs, that was not a continual thing, there was no pattern to that problem
- Different problem that occurred with some pattern, if I was driving in 1, 2 or 3 gear around 2000RPM for a short period of time, the car started to jerk, as soon as I would add some revs it would stop. This also wasn’t happening all of the time.
- Sometimes in the morning when I start the car it would shake and the revs would be jumping from 800 -100 for few minutes. That would last for maybe a minute or two and it would all be fine again
- Also right after the start when I drive the car and wait for the right revs to switch from 1st to 2nd gear the gas pedal would not react right away.
- I also notice the consumption was higher, not much a 1l
So, that is the saga I have with the car, I hope it is not the injectors, since the warranty is out and if it is I wander what could have cause this development.
I am very thankful for any and all help with this. I have heard about the same problems people having with this engine type in the eastern Europe but they still have not found the solution, so if any among you do have some insight please write.
Many thanks, Vanja
