Discussion Starter · #1 ·
I have a 2003 Corolla S that has a ticking that I feel sounds like valve noise. It's very obvious when the engine is cold but fades significantly when the engine is warm. After manipulating the throttle to find out when the sound is loudest, I noticed that around 2,500-3,000 rpms with, say, 10-25% throttle is when it is most noticeable. With no throttle at those rpms it isn't audible and with heavy throttle, it seems to become much more quiet. I suspect that oil isn't getting to the valves but would appreciate some input and suggestions. Would an engine flush be appropriate in this situation? If so, any particular brand work best?