[Vid6639]

Originally Posted by Lumina

Went to the Maruti workshop the other day with my brother's Alto for some suspension problems. It also needed some long due servicing. The car has done 32K and so the service person suggested doing a decarbonisation. Later on was informed by a friend that it's actually an engine flush and not a decarb.
Did some digging around and ended up with more questions.

Engine flush: The machine is hooked up to the fuel lines while the engine is being revved up. I can understand the solvent will be able to clean up the intake ports off any old oil (no carbon as we surely haven't started to burn anything). Once inside, the solvent burns up like normal fuel. Will it still retain the capability to clean the inside of the engine and the exhaust ports?

How is a decarb done? The cleaning I think involves the combustion chamber and the exhaust ports as well. Sounds very much like a manual process, but they sell machines for decarb, don't they?

As if all this was not enough add to that, soft and hard decarbonisation!

Any help from the experts please?

Engine flush means you add a flush liquid to the old engine oil. This flush is like a solvent which thins the oil and has some cleaning properties. This dislodges all the gum and sludge buildup in the cylinder. Once you let the engine idle and the flush cleans up the cylinder you drain out the hot oil. The sludge along with the oil also comes out.

Engine decarb is similar but in this case they connect the fuel rails to a decarb machine. and pump the solvent through the fuel system into the cylinder. This is supposed to clean the fuel rails as well as the injectors and get rid of carbon deposits in the culinder as well.

I'm not very technical and that's as much as I know. Some expert should give better idea.

Originally Posted by NetfreakBombay

As per this news Engine Flush can actually wreck the engine and is not recommended. Though it was sold by quite a few service centers to undercover reporters.

Could This Damage Your Car? | NBC Los Angeles

I too have read these theories. It seems it is not recommended for old engines as the old sludge actually fills in the gaps due to worn out piston rings. I got the flush done for the first time in my car which has done 76,000kms. After the flush the new oil was mixed with a engine treatment paste which restores lost compression.

[aka_iitd]

What is the right time to do decarb for diesel and petrol vehicles.
Is it recommended to do it as 30K or before than that or later
I am confused now after reading this post

[Swifty2008]

Originally Posted by aka_iitd

What is the right time to do decarb for diesel and petrol vehicles.
Is it recommended to do it as 30K or before than that or later
I am confused now after reading this post

For my Swift Petrol, I did Decarb + Injector Cleaning in 25K. You can also do it @30K.

Decarb = Rs.255
Injector Cleaning = Rs.550

Its better you do an engine oil flush + oil change + oil filter change.

[dadu]

If you do decarb or flush at a regular recommended intervals then the chances of any breakdown are very less as the deposit builtup is also less for these additives to work on.

But if you let the deposits accumulate + hardened and then try to clean, the breakdown chances increase but as each vehicle is different noone can guarantee anything, like for vid it caused no harm and for me I did a flush at 40k in my santro and the performance actually increased with no harmful effects.

[m-hawk]

Whenever i have been changing oil s it s been like this . Draining the old oil from drain plug putting the plug back with old filter attached adding half litre of diesel to half litre of engine oil in the can mixing it well putting it in the engine and start the engine with this mixture and let it idle for 2-3 mins !! This drained out mixture is blackish greyish then add the new oil and car purr s like a cat !! Is it wrong can anybody please tell me it is my old trusted mechanic s recommendation !!
REgards
SaaJan

[navpreet318]

Well my experience with engine flushing is that my santro was flushed every 10k kms.at the hyundai centre and the car's still running beautifully at 90k kms.no engine trouble at all.working like clockwork.

[PraveenM]

Originally Posted by Swifty2008

For my Swift Petrol, I did Decarb + Injector Cleaning in 25K. You can also do it @30K.

Decarb = Rs.255
Injector Cleaning = Rs.550

Recently Hyundai did a Decarb for 1200 for my Getz at 16k kms. Rs 255 + 550 seams quite reasonable .. do you know what procedure the Maruti guys did for that?

[Swifty2008]

Originally Posted by PraveenM

Recently Hyundai did a Decarb for 1200 for my Getz at 16k kms. Rs 255 + 550 seams quite reasonable .. do you know what procedure the Maruti guys did for that?

These are done those machines. That's all I know right now. There is another thread which is having the details.

http://www.team-bhp.com/forum/modifi...-my-swift.html

[paritosh2k]

Hi,
I am newbie on the forum and would congratulate the team in here in providing excellent information on the site.

Last week I serviced my fathers Swift Lxi ( Mileage 15000 km ) at Spectra Motors, Ghatkopar Mumbai. The service advisor insisted on getting a carbon cleaning being done. I was not very sure of the same and sensing that he coerced me into doing that. Later while checking on the team-bhp forums i understood that it is better to do the Eng Carb cleaning only after 20K.

Now am feeling a bit duped by Rs 1800+ plus not sure if this early cleaning has damaged anything.

Would want to know from the experts.

Also if this has caused any problems, Should i complain to Spectra on the wrong advice being meted out to me. ( it does seem there customer service might pay heed to the complaint).

Regards
Paritosh

[me_sid]

Hi Gurus, My baleno has done 22K Kms, and i am getting it serviced next week. Couple of points. Do i seriously need engine de-carb? Yes throttle body cleaning and fuel injector cleaning would be done. A very silly question for you guys and you better hold on to your laughters. Do these solutions like OWS and STP's , where are they added , with the engine oil or the petrol tank. Once again guys hold on to your laughs

[Mr_Bean]

I did engine de-carbonisation on my maruti esteem 98 carb last month at Surakha maruti service centre. There has been a drastic drop in mileage after that. I am wondering if this is really effective on old engine & these engines do react to this procedure.

[sanjz]

Originally Posted by Raccoon

Well, I just got my Esteems injectors cleaned by Millenium Mobility (it is a M.A.S.S. in Pune).

This is what read in the Labour charges section of the bill:

FUEL INJECTOR CLEANING (PETROL) 400

So they have used petrol to clean it... and used 400 bucks worth of it??

If one uses additives like System G, should it not keep the injectors clean and not require cleaning by the service centre?

buddy what they mean is cleaning charges for a MPFI engine injector , wherein the fuel is petrol, as the diesel cars also have injectors , so its not that they just clean your injectors with petrol and charge you 400 bucks, its their way of differentiating between petrol and diesel injectors.

[Raccoon]

Ohhhh.... ok! Didn't think of it that way. Now it makes slightly better sense, thanks!

[greenhorn]

Tata Motors Customer Care :: Decarbonising & Engine Flush

Please note that these treatments should not be done if your vehicle does not have complaint and you are visiting our dealerships for availing services and other unrelated repair.

any reason for this disclaimer ? other than to protect customers getting ripped off by their out of control A.S.S who would otherwise recommend it at every service ?

[ramzsys]

A 2004 palio D, run 82k Kms is giving me black smoke when floored. The smoke is more when car is at standstill. Also the exhaust throws around small pellets of carbon, particularly during cold-start.

Should i open the engine for cleaning?