Hi Nick,

Glad to have been of help...I'm sure you solved the problem. Overtorquing has caused this same condition before. While I am not 100% certain why it does I have heard that the entire IP body can warp ever so slightly causing the plungers to bind. The exact procedure you followed has cured others with the same symptoms but it is always good to have one more case to hang ones hat on. The clacking you hear after cracking open the fuel system is typical and most likely caused by air you introduced into the hard lines that had to work its way out...usually it does in a few miles driving but I have heard sometimes it can take longer...

In the words of Dr. House "everybody lies". That goes double for mechanics. They will swear on a stack of bibles they followed torquing procedures but almost never do. My lug bolts were so tight after I had my tires changed I had to stand on the end of the lug wrench and rock all my 200 lbs to break them free, after they swore they would torque them to the 95 ft-lbs spec. Yeah, right. I figure they were at least 200 ft-lbs.

__________________
Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz