wira 1.5 manual....owner manual wrote 5w40..

mine 12 years wira...still using pennzoil 5w40 fully...hehe

My wira 1.5 manual year 2000 recently no power..when drive it like drive a dbw car..rev it oso feel heavy..but not stalling....have clean tb and change spark plug,still same..will it cause by ignition coil?PDT can check for ignition coil failure or not?Thanks...

if ignition coil not fail,weak leh,will cause this?
FYI,my ignition timing has been adjust 2 time only,1st time is when i change my extractor to powerzone..2nd time is when i change my distributor gasket,but the foreman said oredi help me adjust to previous setting..

Does wira mmc injection hv distributor cap and rotor?if hv,normally how much for this two item?thanks

yesterday i was send my wira 1.5 mmc go for tuning due to underpower..foreman said the error code for o2 sensor was on..and he help me clear the code and ask me drive for few days and see..my question is,i thk the engine light will on if o2 sensor spoil..but my car engine light never on before and the foreman said my o2 sensor have problem..

yesterday after tuning,my car become smooth again...but today it become underpower again..any sifu here know wat's the root cause?

This post has been edited by shen1716: Jul 16 2012, 08:41 AM

two years ago,my o2 sensor spoil after change to powerzone extractor..tat time my check engine light is on..and my car is powerful than usual.. after change new o2 sensor,not so powerful but smooth..this time is not powerful and not smooth..haihh