I've been reading about direct injection engines that leaves me a bit suspicious of them. One issue I already knew about is the carbon buildup on valves. Since the gas is injected directly into the cylinder instead of the throttle body above the valves, the gas can't clean them.
Apparently some engines also have poorly designed PCV systems. Contaminated oil is sent back to the oil pan, causing increased wear of internal parts.
Because of these issues, there is some doubts that a DI engine will last as long.
Apparently some engines also have poorly designed PCV systems. Contaminated oil is sent back to the oil pan, causing increased wear of internal parts.
Because of these issues, there is some doubts that a DI engine will last as long.