Land Rover Repair: 2001 land rover hse, land rover hse, smoke tests

Question
hi,check engine light on,scanner shows random misfires from diferent cylinders,also oxygen sensor code.when i drive,cant give it more than 1/4 throttle,or else it will bog down.If i baby it i can get up to speed.When i step on gas,check eng light starts to blink,and truck really bogs down.After a few seconds,engine light will stay on and truck picks up speed.Anything to look for will be helpfull. Thank You

Answer
This is the sort of problem that's solved by looking at live data not fault codes.  If you connect a factory-level test system to the truck and drive it you can see the readings from all the sensors in real time, and you should be able to see what's out of range.  That's the first step in repair.

You may solve the whole thing with electronic testing; you may need to do fuel pressure and vacuum smoke tests too.

It's all going to start with live data on the proper test system.  Otherwise you ar ejust throwing parts and it and guessing