I get a loud popping sound when I haven't started the car for awhile. Its coming from the hood area and happens immediately when I turn the key to the on position. Could it be from the new fuel pump or compacted air?? I am clueless as to the cause. Anyone else notice this with there turbo setup.

 

do you have ems?

 

Of course. Its the emanage I am going to have my installer listen to it. The thing is it only does it on cold starts.

 

I had this happen to me but that was because it was way, way to rich at idle... but I don't really know why that happens now that I got a pretty good map it doesn't happen...


D.

 

Interesting...

I get the final tuning done, hopefully, on Tuesday so I will have them check it out.

 

mine does that occasionally too... i'm pretty sure its fuel pressure bleeder on top of the motor that lets out any extra air in the system.

When you turn on the key, it primes the fuel system, pumping up the pressure in the fuel line... sometimes there is a bit larger amount of air in the line and that pops out... pop the hood and look at that round container that is attached to the fuel rail. when you start the car, you will see the little screw pop up when the fuel pump primes itself!

 

Thats could be it exactly. It doesn't even happen every time from a cold start, its very random. I'm not going to worry about it as it doesn't seem to be affecting anything at all just a loud push of air or something that lasts a split second and then nothing.

 

I get the same thing and it seems to be caused by running to rich. I get my full tune here shortly and will see if i still have that popping sound

 

i thought it was only with EMS... i have a rich tune and it happens to me also.

 

I'm pretty sure you hit it on the head!!! Mine does it occasionally, and it is bleeding out that air