Salam everyone,
I bought new toyota corolla in 2012, since then it has not been driven much, only 25000 hardly. I have been changing its engine oil + filter + air filter regularly but no other maintenance was done. Primarily it was just parked idle.
Now I feel that its been 8 years, its parts might need lubrication/cleaning etc.
A, Apparently there are no significant issues other than the RPM often gets a little down sometimes, causing minor vibrations (despite clean air filter), feels like dusk has got in somewhere much down beyond air filter.
B, Spark plugs are all original never changed.
C, Coolant was once slightly down and the oil changing guy put in water in it without my permission, I then let it as is. have never replaced entire coolant.
D, slight tick tick sound from engine compartment when on UnAccelerated RPM, I probably never heard this sound before when it was new, or the sound may have been very low.
Please advise
What parts are required to be cleaned up or lubricated so that I can get the back to roll properly and smoothly again.
Thank you,
Ahmed