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VW Polo 1.4 TDI 80bhp (07 reg). I have been having problems starting my Polo over the course of a year and have been struggling to get to the bottom of it. I've had the battery checked and this is fine with a sound level of charge. I've used a couple of fuel system flush solutions to clean it out to see if that solved the problem, the latest being microflex but the issue has persisted. It has come down to the starter motor as I realised it wasn't turning the crankshaft over efficiently. This has been replaced this week and after four days of non use, the car struggled to start this morning. After roughly 5 attempts the car finally started and subsequent attempts to start it were fine. You can hear the fuel lines being primed when the ignition is switched on but I am wondering if there is a air leak in the fuel system somewhere. I have had a smoke test carried out on it that resulted in no leakages being found. I would like to know if you have any advice on any other avenue I can explore as to solving this starting issue. Many thanks, ***** *****
Many thanks for your reply. I am in the process of carrying out further investigation on the issue and am very grateful for your insight!