Can exhaust fumes from an exhaust pipe hurt you?

Yes, it creates not enough back pressure and it will let you heads cool down to quick and warp your valves.

That big pipe on the bottom of your car with the cat and muffler on it, ends in a tail pipe, squirts pixie dust.

Metallic donut/metal flange type

You need to unclamp the "C" spring clamps from the manifold. This requires a special tool to expand the clamp. The clamp and gasket kit is around $100. No "special" tool is needed; simply visit...

Air pressure difference between the heat at the manifold and the relative cold outside. The manifold can get very hot, which increases pressure towards to outer, cooler, opening. Also, the pressure...