M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

105 K fuel pump and spark plug questions...

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Old 11-28-2014, 03:41 PM
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105 K fuel pump and spark plug questions...

Vehicle runs fine, should I go ahead and replace the spark plugs?
After filling in the gas gauge shows empty. This has been like this for year or two,, shows correct measurement after driving for 50 miles or so.

Is this a sign of failing fuel pump?
Old 12-30-2014, 08:40 PM
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Honda CR-Z ML55 Bonanza A36
My ml320 does the same thing after refueling, for 3 years now.....no other side effects.
Old 12-31-2014, 07:25 PM
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2003 ML55,2007 ML63
Remove fuse #5 in the footwell fusebox & reinsert it. See if it will sort it out.
Old 01-14-2015, 06:16 PM
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1999 ML320, 2 90 inch Vulcans
fuel gauge recalibration

fuse number 13 on my 1999. Wait until you have less than a half tank left. turn wheel lock to lock to cancel red light.

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