hi ive recently been trying to fix my galaxy the only way i can start it is to put my hand over the air intake pipe when i let it off it starts,ive changed all my filters and glow plugs checked my connector to the maf is working it had power coming from it (only 1 prong tho) dont know if this is normal, ive cleaned my sensor inside the maf, but ive been told it could be relay 109 is this correct because there quite dear for what they are,im fed up of buying parts for it and its still the same i dont know if me starting it like this is damageing it please help im at the end of my teather thanks