random misfire

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Old Nov 22, 2013 | 10:07 PM
  #1  
FF301's Avatar
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From: highlands ranch, co
random misfire

UUHHHH/GRONE - ok, plugs only have been in for 2 months and now I'm having random misfires. it only thru a code once - #5 misfire
brother in law used truck and filled it and added the at the pump fuel cleaner and that's when it started but ive run 2 tanks thru now and still doing it.
going to tear into it sat morning, any idea's ?
truck has 140,000 so maybe a COP ?
some times the check eng lite blinks but does not store any codes
 
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Old Nov 25, 2013 | 01:12 AM
  #2  
jbrew's Avatar
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Joined: Oct 2005
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From: MI
Originally Posted by FF301
UUHHHH/GRONE - ok, plugs only have been in for 2 months and now I'm having random misfires. it only thru a code once - #5 misfire
brother in law used truck and filled it and added the at the pump fuel cleaner and that's when it started but ive run 2 tanks thru now and still doing it.
going to tear into it sat morning, any idea's ?
truck has 140,000 so maybe a COP ?
some times the check eng lite blinks but does not store any codes
Which plugs did you go with? Can make all the difference in the world with these engines.
 
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