anyone knows where to get the T-wrench for spark plug? the whole chrome T shape type?

Sell kar bai VIOS

CVT oil changed jor lar? How many mileage ady now? Setat kar got tak tak sound, after engage D/R no more. Then? After no more if go back P or N will tak tak sound come back or not?

1) If after engaged D/R no more sound, and after release put to P/N sound came back, then it's klac bearing.
Remedy: Sell kar bai VIOS or get your CVT box fixed

2) If only happened in the morning/cold start, have sound before engage gear, and after engaged no more sound even later release put to P/N the sound doesn't come back, it's possible loosen valve train.
Remedy: Sell kar bai VIOS or use higher viscosity oil or send the engine for top overhaul

Test VIOS when when?

No The car is NOT malfunction, just that teppet is loosen, hence the ticking noise. Basically, cars with loosen teppet will have better response and better mileage. It's a clear sign of well seasoned engine, gone through a proper BREAK IN. Go look for those dunno what ceratek stuff plonk in for your next oil change. In the hope that will remove those teppet noise from your engine.

Go SC see see 1st...maybe is canister purge valve. Before that i also suspect is teppet noise, but end up is canister purge valve. Dun worry, this part very cheap only.