Quote:
Originally Posted by Ferdman
Recommend replacing the spark plugs with Bosch F8DC4 plugs, gapped properly. I suspect the middle coil pack has failed, and the spark plug connector may need replacing also. If possible, swap a known good coil pack into the middle position and see if the engine runs smoother. From what I've seen online it's a better value to buy a complete ignition wire set (which includes 3 spark plug connectors) than buying the spark plug connectors separately.
White exhaust is usually due to coolant ... a bad head gasket.
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I'm new to Gas MBs but is it common for the coil pack to fail? I saw a post by a frequent poster on the Tech Help forum and it seemed like what he was saying is that the spring underneath is a common weak point. I wish I had another coil pack to check with before throwing $70 out on one. Is there any way to test the coil pack? I suppose I could pull one of the other two and swap. But I don't know if I'd be able to tell which cylinders are missing to track if the coil pack is a problem. It seems to be an intermittent thing (usually misses but fires occasionally and ran perfectly smooth after disassembly/reassembly twice now but always returns to a miss).
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-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
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-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
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-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.
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