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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

soot covered tailpipes

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Old Sep 25, 2012 | 01:09 PM
  #1  
sticky58's Avatar
sticky58
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From: Fort Erie Ontario
soot covered tailpipes

does any-one out there know why my tailpipes are soot covered,I own 4 f-150`s aged 92 to 96, my 96 -obd-11 and one 95 that is mass cesored,have real clean tailpipes, my 95 with maff air has black in the inside,is this normal, has anyone encountered this?The truck has no lights on and passed emissions,runs great, just wondered if some-one ever noticed this?
 
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Old Sep 25, 2012 | 03:14 PM
  #2  
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ChristopherN
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Joined: Jun 2010
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From: Northern IL
Car engines don't burn the fuel fully. Look at any car exhaust in say, walmart, every car has soot whether it's diesel or not. Which again, it's not burning the fuel quite as perfect.

I have to deal with air fuel mixtures and combustion data daily in my line of work. It's not with automotive but the same thing still applies.
 
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