2015 C400 Engine Issues
09-08-2015, 10:06 AM
#1
Newbie
Thread Starter
Join Date: Nov 2012
Location: Toronto
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
2012 ML350, 2015 C400
2015 C400 Engine Issues
Anyone have any issue with engine backfire on cold startup? C400 is 8 weeks old, and at 3 weeks started to backfire in the engine compartment, not the exhaust, approx 2-8 times, and idle's around 1,300rpm. Engine sounds a little rough when idling. The problem goes away after engine warms up - runs smoother then, and idle's around 700pm.
10-05-2015, 08:44 PM
#2
Junior Member
Anyone have any issue with engine backfire on cold startup? C400 is 8 weeks old, and at 3 weeks started to backfire in the engine compartment, not the exhaust, approx 2-8 times, and idle's around 1,300rpm. Engine sounds a little rough when idling. The problem goes away after engine warms up - runs smoother then, and idle's around 700pm.
10-05-2015, 10:22 PM
#3
MBWorld Fanatic!
The engine can be less than smooth till the engine reaches 80C. Its completely normal. I dont warm up the engine, simply drive conservatively till it reaches normal operating temp. Never had any problems except the almost imperceptible lumpiness till warm.
