The Ford 4.6 liter is one of the manufacturer's smaller V8 engines. The 4.6's major components are the engine block, cylinder heads, intake manifold, oil pan and timing chain cover, each of which seals with a gasket. Along with those are the two crankshaft seals and a multitude of other, smaller gaskets and seals. Pinpointing an oil leak on the 4.6 can take time and patience. If you understand the basics of automotive repair, you can troubleshoot an oil leak on your Ford 4.6.
Remove the oil fill cap from the Ford 4.6's oil filler neck by hand.
Pour the automotive leak dye into the oil filler neck by hand. Reinstall the oil fill cap manually.
Start the Ford 4.6 and let it run for 20 minutes. Shut the Ford 4.6 off.
Shine the black light on the engine, examining each area of the engine until you spot the leak dye, which glows a fluorescent green color. The location of the leak dye will pinpoint what gasket or seal is leaking on the Ford 4.6.
