right started the girlfreinds car the other day when i was replacing the fuel pipes at the sender unit no problem(when using the battery out my car)so bought a new one for her a desil one for more power so went to start it to night and it not catching it's nearly there but it won't go the little extra to catch and run could this just be the cold?and the is also a noise coming from the sender unit when trying to turn the car over is this normal or is this another problem and mybe causing it not to start?