Oil and carbon tend to build up, creating restrictions in the intake manifold. Symptoms will be loss of power (sometimes severe) and poor fuel economy.
Car Problem Reports
Volkswagen Golf TDI Loss of Power Due to Oil and Carbon Build Up in Intake Manifold
Volkswagen Golf TDI Problem
Engine Affected: 1.9L 4 Cylinder Diesel Turbo
Average Mileage: 129,000 mi (98,000 mi - 160,000 mi)
Visitor, 2004 Volkswagen Golf TDI, 1.9L 4 Cylinder Diesel Turbo, 98,000 mi
my car looses power on hot days and stalls. Only happens during the summer hot months.
I took the intake hose off the other day because I was inside the engine fixing power steering issue and noticed this problem. I too have it.