Intake gaskets are seals that are used in engines to prevent leaks or air from entering the intake manifold. They ensure the proper flow of fuel and air mixture into the engine, which is vital for its performance and efficiency. Full definition
CHRA, valve cover, cleaned intake valves and replaced intake gasket, 2 cans of BG44K currently, swapped front o2 sensor and MAF with no change. (humblemechanic.com)
They go normal around 3000 rpm, spraying around the lower intake shows a vacuum leak on the lower intake gasket. (mechanics.stackexchange.com)