anyone tried walnut blasting, cleaning your engine carbons.
is it worth it? any difference after walnut blasting? and whats the price

If im not mistaken only if your engine is GDI, had accumulated more than 50k mileage, getting bad fuel economy and loosing power.

If still using the standard fuel injection, not really.

nothing more than placebo effect

and filling engine with abrasive material

no need dismantle engine to blast kah ?

I seen all in Malaysia down with cylinder head still installed

bye bye engine

If dismantle head then might as well do traditional way of cleaning the carbon. Afaik, the walnut method is to clean the valves without head overhaul (but cannot clean the combustion chamber or the piston head). They blast the walnut with the valves in close position, so they need to alternately open and close the valves by turning the crank manually. Hence the walnuts will not go into the combustion chambers.

one mistake is enough, for something that brings no benefit

get it right zero effect

get it wrong , new engine

wtf for do stupid thing like this if engine not broken at all

Get it right zero effect? You sure?

Direct injection engines tend to have carbon deposit on the intake valves. Over time it can decrease engine power. In serious case, it can cause misfire and CEL.

My car was plagued by rough idles and CEL going into limp mode. Changed everything from spark plugs to ignition coil, nothing fixes it.

I've even tried the hydrogen cleaning but it does nothing. Then tried cleaning the valves at a different shop. When they removed the intake manifold, the carbon deposit on the valves is just terrible. After cleaning the valves, no more CEL, no more misfire or limp mode. No hardware change required to solve the problem

it's just curing the symptom not the problem

and tearing the head off affects so many other things , coincidentally fixing whatever your initial problem was, that's the right way to do it

just one blast of wallnut shells into valve that was forgotten to be closed , you are well and truly bollocked on that cylinder

like you said, unless there is a problem already that can't seemed to be fixed then try it and remove the head.

if just for Syiok sendiri , engine running fine, no CEL , why place such danger for no benefit at all

Well if you're talking about risk of things going wrong during service, almost everything also got risk. Everything that you need to do to service or repair cars also got specific procedure to do it right otherwise something will brake. Doing overhaul probably even more risky. Sure head overhaul will clean better but this walnut method does have its own merit and benefit. Have you seen carbon build up on the valves of GDi engines before? And you don't need to do it too often anyway, maybe just once every 100k km?

no , this is knowingly putting a very harmful material into the engine to fix something which is not a problem , no cel, no rough idle , no nothing

and there is no safe control, just one small tiny mistake forget to close the valve and you are done for, there is no going back , the cylinder will be filled and should require removal of head for proper cleaning

same goes for overhauling , if there nothing wrong go overhaul for what ? too free go and catch worm and sumbat into bontot ?

I bet you their biggest customers are sohai port injection engines Syiok sendiri

Mana ada taking the engine head off? It's just taking the intake manifold off la. This walnut blast only necessary for DI engines. My E60 running N52 (port-injection) doesnt have any carbon deposit on the valves

fine , but until it reaches your stage of degradation

don't drag Shit onto yourself for fun

rebuilt engine... you will not satisfy with the end results.

no lah,, just feel like cleaning my engine after 200k mileage.. doesn't wanna overhaul it..
seafoam and other engine cleaner doesnt really convince me unlike walnut blasting where it really use something to attack the carbon.
my engine running petrol anyway.. doesnt know walnut is for diesel only. @@

Dude, this method is only for GDi engines, cannot be done on normal MPI la.

mate i'm saying even sohai MPI are doing it and claimed suddenly they found 50 hrsprs from it.

if your engine is running fine, no CEL, nothing.

don't do this dangerous no benefit

i bet TS is MPI engine also

Depends on the engine

From my experience, peugeot prince thp engine now 130k km. Already decarbonized twice and overhauled once, cuci manually la not using walnut blasting. Can really feel the engine is heavy and sluggish when carbon has buildup on the intake valves

Meanwhile on the vw tsi ea888 engine, now 120k km, never cuci before. I bet the carbon build up is bad already, but no noticeable drop in performance

This post has been edited by Boy96: Mar 20 2019, 11:07 AM

haha. My experience with engine overhaul scared me away from doing it again. maybe the repair workmenship quality does counts in though.

btw i recently just bought 2 bottles of 3M fuel system cleaner, 2 can of seafoam, 1 can seafoam spray, and 1 bottle techron

so far my observation are:
- techron works for 1 half tank (car noticeable smoother, no jerk when aircon kicks in)
- seafoam does almost the same as techron, can feel car a bit more torquey
- 3M does feel less jerk when aircon kicks in, but performance remain the same

cost me quite some penny for them, though

how much does the 3M fuel system cleaner cost..?
does the car remains the same after 2nd or 3rd fuel ups.?