93 Rodeo UTE (australia, holden rodeo) lack of power

I own a 93 rodeo ute with a 2.8 turbo diesel.

When I first bought it it had low power until about 2275 rpms, which to me is high for a diesel. I drove a 97 model with a 2.8 and it had power right threw the rev range.

but the real problems started after I adjusted the tappets and checked a few things.

I pulled the ducting off and found oil on the turbo impella and in the ducting. I then saw a boost line go from the inlet manifold between the turbo and motor goto a diaphram at the injecter pump. I think its some way of regulating fuel according to the turbo. I removed the top of the diaphram to inspect it, it was full of oil which had come from the turbo. I cleaned it out and refitted it back togeter.

I then wanted to test for a sticky waist gate. so I used a compresser toopen and close the waist gate from the diaphram. it seemed to work ok.

after the tappets, injector pump diaphram and the waist gate ive now got no power. It revs to 1500, blows a lotta smoke, sits at 1500 (on full throttle) for about 10secs then slowely increases to max rpm blowing a lot of smoke..

any ideas?

Try posting here:

http://www.4x4wire.com/forums/postlist.php?Cat=&Board=UBB74

not much Diesel knowledge here.