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Knocking noise

Posted: Fri Dec 04, 2015 9:00 am
by ThatGuy
My altezza has developed a knock that sounds like it's coming from the gearbox, when I downshift and the revs are around 2100 I get a grinding noise but I can now hear the constant knocking when the can is just idling, Im getting a feeling it might be the flywheel but I cant be sure. Also it only does it when the car is coasting in gear as soon as I accelerate it instantly stops, also when I downshift I can feel something knocking through the clutch pedal
Does anyone have any ideas as to what it could be
Cheers :)

Re: Knocking noise

Posted: Fri Dec 11, 2015 11:06 am
by RS Tom-Hundred
Just to confirm. If its out of gear (or with the clutch pedal down) and you rev it to (and past) 2100rpm, does it make the knocking noise or not?

Re: Knocking noise

Posted: Fri Dec 11, 2015 8:58 pm
by ThatGuy
No not when it's just idling It's when it's in gear driving and off the accelerator it makes the sort of rattly grindy noise at around 2100rpm. But I noticed today after an hour drive to work, with the car just idling and out of gear you can hear something rattling around from the gearbox/flywheel area