Hyundai Coupe 2.7 V6 auto 2002 I have a problem starting my coupe. This is an intermittent problem and has no pattern. so frustrating :( She will turn over but will not start, it take 2-5 times of key turning then she fires up, other times it's first turn of the key There is however a slurping kind of noise as you first turn the key (kids make the same noise when finishing a drink through a straw) Has been in the garage no errors any idea? would like to get sorted before the warrenty runs out Thanks Tzyana

Main fuel line from tank to fuel pump, Sounds like the pump is sucking the fuel and air is getting in also, only when the fuel system is pressurised and the return line is sending fuel back to the tank will the air pressure in the tank be higher than the outside atmosphere and then air will no longer be sucked into the system - if this is true there will be a fuel leak - maybe only a little - to find if there is a leak, start the car on level ground, turn off the engine and restart it several times, then move the car back and check on the ground for any fuel - also check under the bonnet and sniff around for any strong petrol smells - there will probably be a fuel pipe damp with petrol - tell me what you find - if it is or isn't leaking I can give you the next steps to identifying the problem -