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M112 misfire

4K views 18 replies 6 participants last post by  LeonardoDaBenz 
#1 ·
hi guys,

Advice needed please, I have a mis fire on my r170 slk 320 on cylinder 6
I’ve changed the spark plugs and checked leads and swapped injectors which still hasn’t cured the problem? Any ideas?
 
#4 ·
misfires usually 4 things

sparkplugs
ignition wires
coil
injector

did u check/swap coils?
 
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