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2002 Harley Davidson f150 5.4 supercharged

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2002 Harley Davidson f150 5.4 supercharged

  #1  
Old 01-04-2019, 04:07 AM
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2002 Harley Davidson f150 5.4 supercharged

Spark plug replacements. Are the bosch double platinums # 1803 any good for this truck there pre gapped at .050. I'm running 8 to 10 boost
 
  #2  
Old 01-04-2019, 11:26 AM
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Nope. These Ford engines do not like Bosch plugs.

Read this thread in the Lightning forum for suggestions:

https://www.f150online.com/forums/li...-lighting.html

NGK TR6's gapped to your boost level or the stock motorcrafts are what you need
 
  #3  
Old 01-04-2019, 04:19 PM
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Spark plug gap

Ngk tr6 what gap at 8-10 lbs of boost or
motorcraft sp 471 plugs at what gap
I do more highway driving than city
 

Last edited by Texmex1980; 01-04-2019 at 04:22 PM.
  #4  
Old 01-04-2019, 07:04 PM
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Stock boost is .042 gap, close it up .001 for each pound over stock.
 
  #5  
Old 01-04-2019, 07:11 PM
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Ngk tr6 it is

I'm going to tighten it up a little .040
thanks
 
  #6  
Old 01-04-2019, 10:30 PM
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Torque them to 28 ft/lb to prevent loosening, thread stripping, and blowout.
 
  #7  
Old 01-04-2019, 10:32 PM
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Ten-four
 


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