Hi,

In the search for my hesitation and misfire, I have come across this part but am unsure what it is. E34.sport stood over the engine while I revved it and the crack/pop noise consistent with the hesitation came from this area. At the time of narrowing the noise down, we had taken the air box off and the noise seemed to come either from the MAF or from somewhere below it?





The only image on real.oem I can find that seems shows this part doesn't actually have a number/description for it. But it looks like it is part of the fuel system. http://www.realoem.com/bmw/showparts...72&hg=13&fg=15

I am wondering if this problem could either be caused by this part, or alternatively as it seems to be within the fuel system should I be looking to replace the pump and regulator.

I will be doing a compression test to see if I have a problem with valves/head, but don't think (hope) this is the case as it's an intermittent issue I have been having now for a while.

Thanks in advance.