UK Car Repair: Rover 400, rover 400, oil pump

Question
The engine is making a a noise similar with the engine noise without enough oil.This happens when driving uphill / overtaking.Also,when gas pedal is pressed bit hard,the engine is chocking.Can you please advise.

Answer
Hi Cip, it sounds like a failing oil pump or a blocked pick-up pipe (assuming you have enough oil). Remove the sump and check the oil strainer for debris and clean it out. If this does not work you will have to replace the oil pump. What do you mean by 'choking'? running rich? or stalling? - Let me know Paul.