Hi

I'm 7 months / 34,000kms into my trip across Asia in a 1993 Toyota Hilux Pickup - 2.4D 4x4.

There's a backround noise when driving, which seems to come from the engine / front bulkhead. It's particularly noticeable through the clutch pedal, and is most apparent when revving the engine with the clutch down, or changing gear. The noise is then a light tapping, spinning-down noise. It sounds too light and external to be big end / main bearing noise. I would blame the clutch release bearing, or input bearing in the box, but wouldn't these be still when the engine is revved with the cluch pedal down? My suspect is a bearing in the PAS pump or alternator. The timing belt has done about 55,000 KM/S (not miles), and looks like new.

Theres a separate (I think) vibration, which is very apparent as you go into 4th at 45km/h through to about 50-55, then goes above this. It is worse when accelerating / going up hills. (This is in 2WD, I very rareley use 4WD). I have replaced the centre bearing, and had the UJs checked - there is a tiny amount of movement in them, but everyone says this is fine.

So I'm a bit stumped about this. It has been getting gradually worse over the last 20,000kms.

Any suggestions would be welcomed

Thanks

Daniel

__________________
4.5 years around Eurasia in a Toyota Hilux|http://eurasiaoverland.wordpress.com/
Pictures Here|https://picasaweb.google.com/113619413612674951960