I 've read the sticky about checking the ex.manifolds by pressurising air or by acetone.I wonder if this method can detect the hair line cracks that appear in higher temperatures when the metals expand.So i want your opinion about connecting the one end of the manifold with a hose with my house's boiler, wait a litle to get hot and then tapping sligtlly the other end and looking at the exhaust ports for water leeks.Will this method find anything more?
