D5252T pump timing off after seal change

[ovim]

I've got a 2001 V70 TDI (D5252T) which had been leaking from the injector pump for quite some time and after having the seal kit for a couple of months on the shelf I decided to change the leaking seals (upper and lower top cover seals and the head o-ring).

I changed the head o-ring by removing two of the head bolts and them slowly unscrewed the two remaining bolts until the head backed out enough for me to see the o-ring. I removed the old o-ring and stretched the new o-ring over the head and into it's groove. Before I opened the head bolts I rotated the engine from the camshaft a little to make sure there was enough tension in the spring inside the pump to keep everything together when opening the pump head.

I got the pump and the surrounding bits back together and it doesn't leak anymore. But it doesn't start quite as good as before and has way too little torque under 1500rpm.

I checked the injection quantity and it's 4mg/stroke which is pretty much the same as before. Then I checked the injection angle and I'm pretty sure that has changed because it was pretty close to the recommended 0 +/-0.5 and now its around 6. But as I didn't touch the belt or the pulleys I don't understand how this has happened? What am I missing or don't understand?

I've understood that with the tensioner pulley adjustment you can make adjustments when you're already within 2 degrees of the right settings so now I should adjust it from the cam pulley because if so far from it??

[petrohl34d]

It's very hard to make small adjustments via the cam pulley. Even the smallest adjustment to the cam pulley can cause the timing to be adjusted by several degrees.

Fine adjustments are made by adjusting the tension on the pump belt tensioner with an allen key.

You really need the software to do it properly though.