I hear a noise coming from left engine's bank when accelerating from idle: seems like valves are too loose... but shouldn't they have to be automatically fixed by our hydraulic lifters?
did u ever experienced this?
it is something like knocking noise but of a lower tone level
1- only when the engine is very hot
. I first heard it when back home after various pulls because I was trying to test the gain from TB install.
2- hear both at idle and grows if accelerating. When high revs, don't hear anymore.
3- left bank only
4- sounds like valves are not correctly tightened .. it is the same noise I have in my bike and when asked the mechanic he told me it was that reason and no need to worry ... but for the car, I thought our valves should be self regulating!
5- in any case, engine works well, except torque limitiation when above 5000-5500rpm
- couldn't be something wrong with hydraulic lifters?
one mechanic also told about the possibility of an aux pulley ...
Tomorrow will arrive the chief mech and will see. hope the mech that installed the Tb didn't do anything wrong.
Unfortunately I didn't pay attention till 2 weeks ago when I still had the stock pulley installed and no mods.
I think at valves because it's strange that the sound seems to come clearly from the left bank!