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Nobbylad · 08-06-12, 10:06 PM

After putting the cylinder head back together in terms of valves/springs etc, I tested the seal by pouring paraffin into the inlet/exhaust to see if it leaked out around the valves. I was reassured by the fact that it didn't, however was wondering if the paraffin will affect the valve stem seals at all and if so, should I rinse out with water/brake cleaner or something else?

08-06-12, 10:06 PM	#1
Nobbylad Member Mega Poster Join Date: Jun 2008 Location: West Lancs Posts: 4,055	Will paraffin damage valve stem seals? After putting the cylinder head back together in terms of valves/springs etc, I tested the seal by pouring paraffin into the inlet/exhaust to see if it leaked out around the valves. I was reassured by the fact that it didn't, however was wondering if the paraffin will affect the valve stem seals at all and if so, should I rinse out with water/brake cleaner or something else?