1995 Volvo 850 Turbo I neeed to recharge air conditioner however on line instruction show you must re-charge from hi pressure side and about half say recharge fro low pressure side which is correct.

You need more oil. Add until it says it is full or in the full range. Also make sure you oil plug is tight on the oil pan.

1995 Volvo 850 Shows the firing order as 1-2-4-5-3
The picture below is an extract from that document. The distributor is rotating clockwise.

Check fuel pressure regulator.
Pull out vacuum line from regulator and see if there any gasolin inside . If there is , it's your problem. Broken diaphragm inside fuel pressure regulator.
Replace fuel pressure regulator.
If not , further diagnostics has to be performed by workshop.

This is for a 98 T5, but it should be close enough. http://www.matthewsvolvosite.com/forums/viewtopic.php?p=93956#p93956

Do you have ac gauges?You can only check with set of 134a gauges.Hook the red hose of the ac gauges to the large ac port on the high side ac line(it is the small ac line/hose).Do not turn the red knob on (on the ac gauges)If need to hook up low side(blue hose)to the small ac port on the low side line(it is the large ac port).If I can help,let me know.

change oil and filter will help /replace spark plugs too

your fuel pump needs replace my friends vo does this to

recharge to 25 to 40. it should be low in freon

your car should have 134-A in it and if you go by a walmart,autozone there you be able to get a charge hose and you pickup two cans of 134-A and the hose will only fit on the low side and then you have the car on the A/C on max and the blower on high an give it a little gas and before you know it your car is charge.

the only correct info is at volvo web site ,pay the 3 days and read the info,/or give us more info on pipe leaking,if its a turbo car pass side?is oil lines that leak/drivers side trans cooler lines? what type,color fluid?