Harshness at low RPM R33 - and doing cam belt

[benl1981]

Ok - since I got my R33 there has been a little harshness, you can hear noise from engine bay if you got to accelerate even softly from 1200rpm in say 2nd, 3rd or 4th.

A mechanic told me today that he would have to pull the cam belt out to have a look as it seems to be from the front of the engine or around that area.

Before this I was going to do the timing belt myself at home.

So I don't now whether I should now. Has anyone solved it by replacing a tensioner pulley etc. I guess I'd have to try and find it when I strip it down - the only thing is I'm not doing this stuff all the time so I don't know whether things look bad.

I was thinking of doing the water pump and the 2 bearings.

THe mechanic said he would replaace those if they looked suspect.

Any ideas or advice appreciated.

P.S. Engine is RB25DET

Thanks

Ben

[TommO]

Most skylines i've heard are noisy under 2000rpm or so, like a rattling noise of some type, and then clear up after that...

Not sure if thats what your referring to though?

[benl1981]

I've replaced the timing belt and the harshness is still there.

I have noticed that there are some missing studs ont he exhaust manifold but the exhaust isn't very noisy at all. At low rpm could this be effecting the smoothness of the motor?