[problem with my engine]

no

i don't have a youghurt gunk on it

and the gasket is good

[problem with my engine]

hi.,.

i just wanna help from who has the experience.

i have 2001 toyota echo hatchback 1.3 L. ( 65000 km )

from a year ago. i have a big problem with my echo.

i have aloud sound from the engine . a very very bad acceleration.

a huge lose in power. top speed is diffuculty 150 km/h. the exhaust smells not to normal.

i make a maintainance to my echo.

replacing :

air filter

fuel filter

spark plugs

oil filter

engine oil

exhaust muffler

cleaning M A F sensor , air intake .

P C V valve are in good state.

note : my check engine light isn't on . and i'd never light on.

and it makes me crazy

please don't tell me go to the dealer cuz i have , and did nothing