What is this a sign of?

Krazykid

<-Daily Thought Process
Nov 22, 2008
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16
Upstate, SC
I'm in the process of replacing the Head Gaskets and as I am freeing up a little space I found this: (see Attached Picture.) What are some ideas as to the cause of the mess on top of the Number one Injector? Thanks for the help.
 

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