BenzWorld Junior Member
Date registered: Jul 2005
Vehicle: 1996 C280
Location: Atlanta, GA
Mentioned: 0 Post(s)
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Engine misfires following heater hose leak
I had the plastic heater hose flange crack high on the driver's side firewall (see photo for location of leak). This covered the engine in radiator fluid. I replaced the flange (thanks to another post on this site) but now the engine is misfiring. There were 3 codes: misfire on cylinder 5, misfire on cylinder 6, misfire on multiple cylinders.
There were not any puddles of coolant around the ignition wires or coils when I pulled the cover but I wonder if the steam could have shorted something out - especially since the problem seems to be the last two cylinders close to where the leak was. Any thoughts on what might have been damaged from the drenching?