Krambo Posted April 5, 2005 Report Share Posted April 5, 2005 Well, I finished my Radix install this weekend and was shocked when I took off the stock intake manifold. The intake ports on the heads were filthy. A moderate layer of black sludge was evident. Anyone else have this issue? I also noticed a little build up behind the throttle body. I cleaned it all out with a rag and some solvent (and no, nothing fell down the ports). I have noticed this before on my old '99 5.3L however not as bad. Quote Link to comment Share on other sites More sharing options...
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