PeachParts Mercedes-Benz Forum - View Single Post - Hiccups during cold idle: is this common?

rickg · #2 02-23-2003, 03:57 AM

Yeh, I wouldn't worry about it until it doesn't smooth out after it warms up. Remember, diesels use heat to ignite the fuel, and a dead cold engine, even with hot glow plugs, is not gonna run real smooth until the pre-combustion chamber heats upa bit. My engine is pretty fresh, and on real cold mornings it takes about 15-30 seconds to settle down. An older engine with more wear is probably gong to take a bit longer. (I know my old 220D's did) But what you have sounds right in line with how mine acts. (Same engine)