Need help guys - Engine vibrations : Swift Diesel

[bhavneet 20]

Hi Guys! I have been off from the forum for quite sometime now, coming back for good now. My ride, swift vdi 2013 model has completed 95000 Kms without any hassles until now. For the past few days there seems to be some issue with the engine. Following are some scenarios explaining the issue:

1. Slight fluctuating rpm while cold start , and more prominent fluctuations while switching on the AC along with engine vibrations. I understand the low RPM on a cold start but this is something new. 

2. While accelerating on highways (80-100 KMPH) there is a noticeable vibrations/car shaking feel . This worries me a lot as I have never experienced this.

3. My brother also owns the same model/year combination. He turned on the car on a cold start and immediately told me about engine vibrations which are not there in his car.

 

4. I am running 16" wheel/rims combo, so your immediate reply maybe the wheel balancing part but the strange part there is no vibrations or wobbling in the steering wheel. Plus I recently changed tires on 90000 Kms with balancing and alignment done, so that point maybe ruled out.

I spoke to the Maruti service adviser who attended me on the 90K service, as per his advice the engine mounts can be an issue , if replaced it would set me back by approx. Rs 10,000/-.  

I wanted to gather as much info as possible before taking the car to the service station. Reaching out to the experts here in the community, I would really appreciate your inputs.

 

Cheers!

[vikky1971 4]

@bhavneet this forum is not happening forum  like teambhp. 

   Well! Coming back to your ride. It's not the engine mounting problem. Get the diesel filter(disposable one) renewed and the diesel pump has a strainer, in the fuel tank, to be inspected and get it cleaned. Inspect the air filter and clean it, refer any YouTube video for that. Problem with the diesel car is that if any of the fuel injector under-performs the vibration issue will start. Can you ask some service guy to check the peak pressure(bar) of each cylinder, all the four readings should be nearly same, if value of any one is less than the average value by 5 bar then that fuel injector needs overhauling, this last step is extreme. The problem would either be clogged air filter or clogged fuel filters.

keep us updated.

[sachins 51]

In addition to what @vikky1971 has already mentioned, please get fuel injectors and throttle body checked and cleaned.

 

[bhavneet 20]

10 hours ago, vikky1971 said:

@bhavneet this forum is not happening forum  like teambhp. 

   Well! Coming back to your ride. It's not the engine mounting problem. Get the diesel filter(disposable one) renewed and the diesel pump has a strainer, in the fuel tank, to be inspected and get it cleaned. Inspect the air filter and clean it, refer any YouTube video for that. Problem with the diesel car is that if any of the fuel injector under-performs the vibration issue will start. Can you ask some service guy to check the peak pressure(bar) of each cylinder, all the four readings should be nearly same, if value of any one is less than the average value by 5 bar then that fuel injector needs overhauling, this last step is extreme. The problem would either be clogged air filter or clogged fuel filters.

keep us updated.

@vikky1971 yeah lets make it happening then  . 

I changed the air filter recently so that probability can be ruled out. I got the injectors cleaned in the last service at 80k however i'll keep this in mind while discussing it with SA. The cylinder pressure is something to look at. Just curious when you say this step is extreme, what is the expected damage to the pocket? 

[vikky1971 4]

@bhavneet I really don't know the cost but needle and guide in a injector would cost 2500₹ each. Still not sure of its cost. Single injector costs around 5000₹. Check the disposable filter, diesel pump's suction strainer(location:in the tank) and the peak pressures. If peak pressures are fine then no need to touch the injectors.

    Keep us all updated with your troubleshooting.

[bhavneet 20]

On 10/08/2017 at 6:29 PM, vikky1971 said:

@bhavneet I really don't know the cost but needle and guide in a injector would cost 2500₹ each. Still not sure of its cost. Single injector costs around 5000₹. Check the disposable filter, diesel pump's suction strainer(location:in the tank) and the peak pressures. If peak pressures are fine then no need to touch the injectors.

    Keep us all updated with your troubleshooting.

Sure, have planned a visit to MSS next weekend, will keep the post updated.

 

[bhavneet 20]

Guys an update to this issue. I got it checked from couple of my reliable mechanics and also from MASS, the issue seems to be with the driver side engine mount - supposedly called "oiled based mount". I couldn't get the part replaced as it was not in stock, and while trying to get it from the authorized MGP outlets came to know that this part comes with advance notification as it is an expensive part - RS 3784/- to be precise. I'll be going again this weekend to MASS for the replacement, will be back with an update post replacement.

[vikky1971 4]

13 hours ago, bhavneet said:

Guys an update to this issue. I got it checked from couple of my reliable mechanics and also from MASS, the issue seems to be with the driver side engine mount - supposedly called "oiled based mount". I couldn't get the part replaced as it was not in stock, and while trying to get it from the authorized MGP outlets came to know that this part comes with advance notification as it is an expensive part - RS 3784/- to be precise. I'll be going again this weekend to MASS for the replacement, will be back with an update post replacement.

Initially I told it's not engine mounting problem, well! You just confirmed that it was mounting problem. My Bad!

     Once the oil based engine mounting is renewed update us all if the vibration problem solved?

[bhavneet 20]

11 hours ago, vikky1971 said:

Initially I told it's not engine mounting problem, well! You just confirmed that it was mounting problem. My Bad!

     Once the oil based engine mounting is renewed update us all if the vibration problem solved?

This was the visible part which may be the reason behind this issue. Any which way this part needs to be replaced. Fingers crossed if this is sole reason for the issue or something serious is in the pipeline .

[vikky1971 4]

@bhavneet keep us updated.

[bhavneet 20]

So guys finally the problem is solved and the solution would really surprise you. So the Service advisor heard my side of the story and what all I heard from the expert mechanics last week, he takes the key from me and says " aao sir ek drive leke ate hai" . He takes a good 10 mins drive, with proper acceleration on open roads and then when we return back to the station, I'm surprised at his findings. The left axle assembly is the culprit! No problem with the engine, no problem with the engine mounts, its the goddamn axle which is at fault. 3 hours and Rs 6600/- later, Happy to say that the issue is now resolved   

[vikky1971 4]

@bhavneet good to know that the problem got resolved. By The Way  what exactly wrong with the left axle? Bad ball bearing or shocker?

[bhavneet 20]

3 hours ago, vikky1971 said:

@bhavneet good to know that the problem got resolved. By The Way  what exactly wrong with the left axle? Bad ball bearing or shocker?

If I remember correctly the adviser told some moment related issue , could be the ball bearing part. He also quoted that you're using "big tires" which may have resulted in this issue. 

[vikky1971 4]

?.