how remove impurities inside exhaust manifolds

legsroses

.060 Over
Joined
Mar 6, 2012
Messages
200
Hi,
how do you remove differents impurities type, for whole lenght with circumference too, mostly there is soot residues with obvious dirty. I think should exclude however presence of deposits. I prefere possibly something of simply/quick, then nothing like sodium hydroxide. So suggest me your preferred method.
Bye Bye
 
I thought use too a pressur washer with detergent even, however I'm not quiet to do it since my doubt is if humidity should be avoided and regardless of everything. I worry too much or maybe I could solve using after washing an air compressor. Which is your opinion about.
 
Steam is excellent at removing carbon build up. If this is on the polished stainless heat shields, honestly, elbow grease to polish the residue/grime after steaming whatever is left is the best method.
 
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