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s1ngletracker · 12-30-2010

So I'm in the middle of a head replacement and there are a few things I've found that are concerning me and thought i'd get a second opinion.

First, looking at the back of the block, it seems like one of the freeze plugs are leaking. There is a fluid stain trail down the back of the block, coming from it. I should replace this, right? Should I replace all of them? How often do they leak? Best way to knock it out, is it hard?

Pics:

Second, There is a bare yellow wire on the harness that goes to the alternator plug. Any idea what this is for?

Pic:

Thanks for the help!

12-30-2010	#1
s1ngletracker Join Date: Oct 2005 Location: The land of the next-gen HMMWV Drives: A BMW Posts: 1,875	Leaking freeze plug, and bare wire? So I'm in the middle of a head replacement and there are a few things I've found that are concerning me and thought i'd get a second opinion. First, looking at the back of the block, it seems like one of the freeze plugs are leaking. There is a fluid stain trail down the back of the block, coming from it. I should replace this, right? Should I replace all of them? How often do they leak? Best way to knock it out, is it hard? Pics: Second, There is a bare yellow wire on the harness that goes to the alternator plug. Any idea what this is for? Pic: Thanks for the help! __________________ Style's automotive engineer Sponsored by DB Performance (dbptuning.com) A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now.