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aga · 06-12-2013, 04:00 AM

hi! first of all, when the engine is cold i can hear a lot of valve noise and a friend of mine who's been around silvias all the time says its my VTC sprocket going... when it warms up it's ok. Also, when the VTC engages at 5700 rpm, the power fc shows knock. Is that real knock (pre ignition) or just the klang of the vtc engaging that ticks off the sensor?

06-12-2013, 04:00 AM	#1
aga Zilvia Junkie Join Date: Mar 2013 Location: Athens, Greece Age: 46 Posts: 580 Trader Rating: (0)	vtc/valve noise and knock. hi! first of all, when the engine is cold i can hear a lot of valve noise and a friend of mine who's been around silvias all the time says its my VTC sprocket going... when it warms up it's ok. Also, when the VTC engages at 5700 rpm, the power fc shows knock. Is that real knock (pre ignition) or just the klang of the vtc engaging that ticks off the sensor?