I've had a huge amount of help on this forum before and run into a little problem so thought I would post this here to see if anyone can diagnose.
My alfa is a 156 v6 (1999 model).
The issue is that the engine wont start, when turning the key you can hear the engine try tio start but it wont kick in. I've filmed the noise below in this video:
Alfa engine turns over but wont start - YouTube
(When I say boot I obviously mean bonnet!)
Each time I try to start the engine I get a noise as heard in the video if you turn your volume right up hopefully you can hear it. Each attempt after that (i've tried not to do this too many times as no doubt won't do the car much good) the noise gets weaker.
Some background (and why I think this may not just be a dead/low battery issue):
1) The car was working fine but has been sat left for 1 month whilst I was away. The problem happened when trying to start the first time (where it hasnt been used for a month) which is now doubt a factor in this (suggesting a battery issue)
2) I have tried a trickle charge for about 1 hour (not enough for a full charge but normally enough to give enough juice to start the car). This was just before filming the video, I have left the car on trickle charge again and will wait longer this time (4/5 hours this time) and will update if this has any luck.
3) This is happened once before 4/5 months back. It was the same issue where the car was left for a couple of weeks, it did the same thing, and then the next day (without trickle charge on at all) and it just started first time. This to my suggests there may be something more at play than just a dead/low battery since otherwise it wouldn't have started again so easily.
Any suggestions as to what this could be are most welcome (i'm quite an newbie when it comes to fixing this type of stuff so idiot-proof instructions are also welcome!)