I bought a disco 2 td5 a couple of nights ago, it’s been made off road ready with 285s and a 4 inch lift. Most of the electrics have been bypassed including the immobiliser as you have to push a button to start it. After about 30 mins of driving I parked up and it wouldn’t start again. It started off a jump but then cut out after about 20 mins of it running, wont start off a jump nothing. Could anyone point me in the right direction of what the problem could be??