So what does this sound like? Initially I thought that this was my fuel pump going bad. And it's hard to say where the sound is coming from in this video, although to me it seemed to be coming from behind the rear seats. Thus, fuel pump? After all the pump was replaced back in 2007 with the Mine's engine, surely after 15 years it could be failing?
Well, turns out that I was wrong. Because the sound is coming from the Tomei fuel pump regulator.
|This thing. I don't have video but once I had someone turn on the ignition with the hood open, it was clear where the noise was coming from.
A bit of research reveals that with this fuel regulator, it tends to lose the pressure in the fuel system that is always there - about 2kg worth - over time. So after a couple of weeks of not using the car, the pump effectively has to prime the fuel system and thus you get that noise.
So the way to fix this problem is to start up the car every week! Give me an excuse to drive the car around and this should no longer be an issue! But has anyone else encountered this problem? Please comment and let me know, including if you have a solution to this! Thanks!!