Last week the fuel pump relay pop after its 2nd one its has in a few weeks.

So then i have been told to have look at the fuel pump and the wires to it and check for the right about of 12v.Got new fuel pump and relay today and the car has been off the road for 1 week. I try the new relay today and the car would not start at all so i had look at the battery and it was flat lol. Got the car started in the end and as i was doing some tests to see why it smokes only on start up i pulled the oil cap off and the car cut out ? is that oks lads ? Then i had the car running and i pulled the hose of the intercoole going to the turbo and the same again the car cut out ? is that ok or not lads ?

Cheers for any views on this