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2001 f-150 missfire

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Old 12-12-2012, 03:14 PM
mudlife01 mudlife01 is offline
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2001 f-150 missfire

Hey new user I have an 01 5.4 Triton with engine light on I put it on the scanner and it read miss fire on cylinder 6 and 1 I changed the cops and plugs boots and spring erased the codes but the check light is back on and scanner is say miss fire on same two cylinders u can hear it in the exhaust u can smell gas when sitting at an idel around 40 MPH has a slight engine shake goes away when u accelerate I am not sure what else to do some one told me to check for vac leaks and fuel pressure any one have any ideals any advice greatly appreciated thanks
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Old 12-12-2012, 09:34 PM
pdqford pdqford is offline
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Quote:
Originally Posted by mudlife01 View Post
Hey new user I have an 01 5.4 Triton with engine light on I put it on the scanner and it read miss fire on cylinder 6 and 1 I changed the cops and plugs boots and spring
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any one have any ideals any advice greatly appreciated thanks
Maybe change the sparkplugs?
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  #3  
Old 12-13-2012, 05:51 AM
vaper vaper is offline
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cops? did you change the spark plugs or the coils?
Swap # 6 & 1 coils to 2 other cylinders, see if the missfire's
migrate with them.
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Old 12-13-2012, 11:42 AM
Bluegrass 7 Bluegrass 7 is offline
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Do not keep driving the truck in this condition or you stand to burn both sides cats.
Then you will be in for more than 2 cylinders missfiring for cost and hassle.
Non firing cylinders burns gas in the cats and can melt them.
Good luck.
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  #5  
Old 12-15-2012, 08:42 AM
vaper vaper is offline
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I agree Bluegrass
With 2 misfiring cylinders the CEL should of been flashing
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  #6  
Old 12-15-2012, 03:12 PM
Mcgiveral Mcgiveral is offline
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Same issue

I had much the same issue. Changed the plugs and the problem was solved.
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Old 12-15-2012, 03:12 PM
 
 
 
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