hi, anyone got good workshop for this, gdi walnut blasting service, can recommend? As long in Selangor/KL or Seremban area. Thanks. Car is Proton X series with 70+ k km now

Zordaq in bangi quite famous

Your ride still got warranty or not? If got warranty dont simply go out let other people do, if not later engine got problem they gonna blame u go out do and void warranty.

still got warranty. told by many workshop to do walnut blasting due to gdi after high mileage

Dont stupid go out do extra, if got warranty go back SC and complain if engine got problem at least they help clean or claim without impacting the warranty. Once after warranty finish only go out do, if not later anything happen they gonna blame u go out do without their consent.

I believe 70k is still not that high. My family owns an X70 with 120k+ KM mileage. It is still running smooth like new (albeit we just made a claim for a new gearbox). Retain your warranty and talk to your service advisor if you feel your car not performing as it should.

i read one CX5 owner on FB, CX5 also come with GDI, got jerking, but SC unable to solve his even with Spark Plug change. That why ask is it better with Walnut, some mentioned no need cz warranty



This post has been edited by ayamtriplex: Aug 12 2024, 11:13 AM

No doubt walnut blasting has been done a long time. But modern engines very rare carbon build up badly (less than 100k mileage la, I can be wrong). Unless you skip or delay oil changes and lenjan the car everyday, then maybe.

Is your car jerking? Or significant performance drop?

getting a bit higher FC once passing 50k km onwards. This based on the meter per full tank. Jerking nope, smooth, I think similar as day 1

This post has been edited by ayamtriplex: Aug 12 2024, 12:55 PM

Carbon build up in GDI engines will be more serious if your car spends a lot of time in stop and go traffic or short distance travel. There's a thing call Italian Tune Up that will help prevent excessive build up. Some swear by it while others feel its redundant, can learn more about it



@2:55

yes for me, wife use this car mainly sending kids and pickup to school from home. I did read the GDI carbon due to no fuel (with additive) shooting the valve face cz directly into combustion chamber, hence u rev up high rpm also wont do the cleaning.

Modern GDI don't have this problem already or no where as severe as the Peugeot / VW GDIs of old. I drive a relatively newer Peugeot, 160k mileage with no walnut blasting done. If you really want to know whether there is severe carbon build-up, get the workshop to open up the valve cover and look at the valves, pistons etc.

This depends, like someone said if he got a lot of start stop or short distance driving the chance of getting carbon built up is high. My mechanic place have seen Mazda Cx5 with over 200k still no issue as the owner always travel on highway high-speed driving, while another customer with 100k over already complain jerking and serious carbon built up, when ask he say he only drive in city and never really drive high speed over 110km/h
The one that pampered the ride is the worse, compare to another 1 which is speed devil got less carbon built up.

Open up the engine top can see already whether walnut blasting is required or not, you can decide after looking at the carbon build-up. Anyway, nowadays its not too expensive do this, below RM1k I think.

If open up for sure they gonna ask you to do it, is either serious or not. Coz you also need to pay for them to open up the intake also, so it is better to wait until like serious jerking or loss of power then do better. Usually recommend is after warranty ends like 100k check 1 time.

What problem you're facing that you need to do walnut blasting so early ?

not obvious issue, saw the car FC kinda getting poorer vs new time, and read on FB group, GDI will getting carbon deposit once hit 60k km above. thats why ask recommendation etc

noted thanks for info

How poor was your FC? For Proton I think 12litre/100km is a norm on city driving, been always like that ever since Campro generation, and I read that Geely 1.5T mostly also same FC figure like this.

I am a great believer of preventive maintenance.

Carbon is a by product of combistion. Therefore it starts to build up any time the engine running, which means the day you got the car from dealer. On GDI engines the carbon buildup is faster than PIE. Mods are done by engine manufactures to delay this process. However no modern engine is free of this carbon buildup. So it good to do decarb anytime to keep your engine running in top shape.

Your situation is a little cautious. Your car is still under warranty. You will void warranty if any 3rd party tempers with the engine. I'd suggest wait till warranty is over. Then you can decarb your engine every 50Kkm to keep it in top shape.