Another s2000 engine rattle thread (with video sound)
#12
Thanks for the confirmation guys.
It is quite a scary rattle and only happens when warm but goes away when you apply throttle. Are you guys experiencing the same too?
I would imagine as long as the rattle doesn’t get louder with revs/throttle, then it’s ok right?
It is quite a scary rattle and only happens when warm but goes away when you apply throttle. Are you guys experiencing the same too?
I would imagine as long as the rattle doesn’t get louder with revs/throttle, then it’s ok right?
#15
We are not talking about a rattle. This is a specific sharp tapping noise that comes and goes. 3-7 taps, then goes silent. Then returns. Then disappears. And so on…
This can happen cold, or hot. During hot idle, the spray from the oil jets is low. Just above idle, the oil spray under the pistons is mushroomed down when the piston is going down. The oil is forced into pinholes in the piston, directly flooding the piston skirts. It hydraulically stops the shifting of the piston, and the subsequent noise.
Oil exit holes, which originate underside of piston, directly about the skirt:
Oil entry holes, underside of piston:
This can happen cold, or hot. During hot idle, the spray from the oil jets is low. Just above idle, the oil spray under the pistons is mushroomed down when the piston is going down. The oil is forced into pinholes in the piston, directly flooding the piston skirts. It hydraulically stops the shifting of the piston, and the subsequent noise.
Oil exit holes, which originate underside of piston, directly about the skirt:
Oil entry holes, underside of piston:
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