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#1
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Help E420 97 Running like a bear
I've been runnig smooth for a while....After a coil pack was put on about a month ago. Two day's ago engine light came on and it started to run rough. So I pluged in for the codes. miss fire on all pluges.....So I changed them all tonight.......Same...messeage miss fire on pluges. While I was looking or a problem I tested each pack to see if there was a problem. One seemed as though it dead no rattle no roll if I unplugged it or not. Dash says engine electric . Any thoughts? Has a lot of power does have 188,638 on the dash.
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#2
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The only thing(s) that could affect all cylinders is vacuum leaks OR fuel(pressure OR quality). Did the problem start after a fill-up with fuel?
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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Wash your engine lately?
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2009 ML350 (106K) - Family vehicle 2001 CLK430 Cabriolet (80K) - Wife's car 2005 BMW 645CI (138K) - My daily driver 2016 Mustang (32K) - Daughter's car |
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