Today I tried the without removing throttle body medium. My mech just rev for about 1min+ and using a spray at the same time. According to him, this can also clean the intake manifold and injectors as well. But throttle body won't be that clean.

Do you think he should take out the throttle body and clean it first and then spray? Or spray will do. He gave me 2 options, removing the TB or without (using the spray). Yea, a lot of white smoke coming out from the rear.

This cannot be done many times as it will damage the engine, it's my first time, sadly got no angpows.

Can hear loud roar sound and much more responsive (powah).

Throttle body cleaning.How much did the mechanic charge you.I was thinking of cleaning my Waja throttle body cause the engine acceleration is sluggish

Does it mean that sluggish acceleration, bad FC can and may be due to dirty TB / injectors?

RM70.

Bad fuel consumption is due to dirty air filter. I only do tuning when my idling unstable. Moreless about 30,000km - 40,000km.

how bout the spark plug ???

that is very very expensive
my mech charge me nothing if spray cleaning or rm40 if take out TB
tuning? ur car is carby ke?

Changed last year.

How often do you need to do this? Usually I just use Fuel System Cleaners + Engine Cleaner Flush. Once every year.

EFI.

remove and clean ur TB from inside out is better than jz spray the thing with cleaner....

EFi? how do u tune ur engine? or u got piggyback/standalone?

best to take out the injectors, send for ultrasonic injector cleaning and change the fuel filter at the same time.......

or use injector cleaners a few times till its clean... use once might not efficiently clean up all the residue...

Just hope that my idling stable for at least a year, otherwise I might go phuck the mechanic up. He is not my regular mech, I only go there to do tuning. My mom's friend. Obviously my regular mech is much better but tarak tuning gadget.

I'm afraid the throttle body might still be dirty...

How often you guys do spray cleaning? Will it be ok to do both, removing the TB and clean it and then spray cleaning again inside?

Can feel the ummphh, the engine is much more responsive than before, rpm naik faster.

How much it cost to do injectors cleaning? Does this included when I go for full overhaul?

Yea, tak mau Mivec anymore, give up, not as excited as last time. Now just want to keep the current engine healthy, able to last me for another 10 years or 300,000km.

Fuel filter never change before, and so is the water pump. Timing belt change also coming soon, another 10,000km.

I might consider doing everything at one shot. Roughly about how muchie?

Engine mileage is 120,xxx.

check ur injectors see dirty or not... if dirty get it cleaned...
change petrol filter as well... might had clogged up, causing fuel surge problem (jerking)....
water pump change together with timing belt...

a mech I knew charge me RM20 with some tutorial. Later I did it myself

You mean clean the injectors using sound?
How do we clean the injectors ourselves?

yes, ultrasonic vibrations.. even my teeth felt the vibrations..

wanna clean it urself? use petrol.. but won't be as clean like using the ultrasonic method..

for me, removing the throttle body and cleaning it using petrol is the best way.. open up the butterfly and sand the housing using a 2000-grit sand paper, wash it, blow it dry (or let it sit a while to dry) and stuck it back in.. but don't forget ur intake manifold, clean it too..

it cost rm40 to clean each injector. best to change the petrol filter when u clean the injectors......

i will remove the throttle body and clean it with WD40..if u want clean without removing it,then u should clean it with engine off..
coz the WD40 is a chemical liquid..if spray WD40 to clean the TB while engine running,the chemical will damage the oxygen sensors along the exhaust..

sorry to offtopic may i know wat is throttle body liao?

throttle body is a device that control the amount of air flowing into engine...u are open the throttle valve larger as u depress ur accelerator pedal deeper...can refer wiki or google for more information..

I see. i have wikied it up. Seem it only exist on efi cars eh.. how about carb?

both efi and carb's car oso gt TB

WD40 got cleaning properties meh

in carb, it is called carburator

efi is called throttle body
carb is called butterfly valve

actually both is the same... acts as a gate for how much air to enter the engine...

i see. Thks for da info. Learn sth new today.

yup..can use WD40 to clean TB..

I asked my mechanic and he say that WD40 is not recommended to clean throttle body as its essentially denatured kerosene.Will corrode the throttle body gasket and the valve seals.

yeap.... but bawah pokok mechanics jz make do with whatever available... lolz...

better use petrol /carb spray / throttle body cleaner to clean it...