The Ford Barn

AnthonyG · 10-28-2019, 06:50 PM

I took the 4 barrel intake off my 8BA to change to Tri-Power intake. Motor has less than 3000 Miles. Inspected intake valves & springs which looked fine. I was surprised to see carbon build up in the intake bores that line up with the intake manifold between where they mate & the valve stems? No combustion S/B happening to create carbon in those bores? Maybe valves leaking igniting gas vapor in passage ways? Assuming needs disassembly to clean carbon to keep carbon pieces out of cylinders? What’s going on?

10-28-2019, 06:50 PM	#1
AnthonyG Senior Member Join Date: May 2013 Location: Pa. Posts: 2,174	Carbon build up inside intake bores? I took the 4 barrel intake off my 8BA to change to Tri-Power intake. Motor has less than 3000 Miles. Inspected intake valves & springs which looked fine. I was surprised to see carbon build up in the intake bores that line up with the intake manifold between where they mate & the valve stems? No combustion S/B happening to create carbon in those bores? Maybe valves leaking igniting gas vapor in passage ways? Assuming needs disassembly to clean carbon to keep carbon pieces out of cylinders? What’s going on? __________________ Nomad