Short version: Engine is making a terrible clicking sound at 2500 RPM, Comes from top end of motor near fuel rail/timing belt.

Link:
Long version: I took my valve cover off about a month ago to inspect the timing belt and replace the gasket, about 2 weeks later this sound developed. Today I adjusted my valves and the engine is idling smoother, but I am still having this horrible clicking sound at 2500 RPM. I had a timing belt snap about 40k miles ago, The engine compression tested fine afterwords and I've been driving it ever since with no issues.

Does anyone know what this is? I fear the worst!

 

Wow no one has ANY ideas? Yikes!

 

I hear belt chirps

 

So I took it to my local mechanic and he said the same thing, WHAT A HUGE RELIEF I thought for sure a valve was shot. Gonna take the alternator belt off and see if the sound persists, thanks for taking the time to comment!

 

Yea sounds like the alt belt slightly chirping or slipping, inspect the belts and replace them.

 

Took the alternator belt off, sound goes away completely. I put the belt back on (its new) and I still get the ticking at 2500, no matter how tight it is.

Could this be an alternator bearing going bad? if so, do places test/fix them or should the whole thing just be replaced?

Thanks

 

All belts need to be properly tensioned, go from there and if the sound is still noticable than it probably is the bearing in the alternator going bad.

 

Proble
white smoke or steam coming out of the valve breather

problem #2
ticking sounds in valve cover

problem #3
white bubbles in radiator in cold engine start-up
note:
sometimes i my temp goes up then going down in a few seconds.

I just did a compression test, result is 12 1/2 - 11 - 12 - 12

No white smoke or heavy smoke coming out from my exhaust pipe and dipstick

car:
honda civic SiR 2000 model philippines
engine b18c

expert opinion is much appreciated.