04 Ford F-150 is missing!!
10-04-2018, 11:00 PM
#1
04 Ford F-150 is missing!!
I have a 2004 ford f-150 4.6L and it has developed a miss,..its not putting a code but it has a big hesitation when starting out and no power...my question is if its coilpak how do you which one??
10-05-2018, 06:38 AM
#2
Mark
iTrader: (1)
You don’t... when was last tune-up ? Mileage on motor ?
10-05-2018, 10:44 AM
#3
10-05-2018, 10:47 AM
#4
Mark
iTrader: (1)
Check for a dry rotted vacuum hose.
10-05-2018, 12:04 PM
#6
Missing
[QUOTE=techrep;5938429]Check for a dry rotted vacuum hose.[/QUOTE.
Now correct me if im wrong..if you have a vaccum leak, it wont idle and if you step on gas it runs better. Thats not whats happening....it runs bad all the way up in rpm...
Now correct me if im wrong..if you have a vaccum leak, it wont idle and if you step on gas it runs better. Thats not whats happening....it runs bad all the way up in rpm...
10-05-2018, 12:05 PM
#7
Renaissance Honky
vacuum hoses, and a healthy tank of fuel injector cleaner are the easy, first-steps.
Two cans of Techron or Gumout, anything with P.E.A. Lots of driving/heat cycles to let it soak and get the crud loose.
Maybe a new fuel filter, as well.
Two cans of Techron or Gumout, anything with P.E.A. Lots of driving/heat cycles to let it soak and get the crud loose.
Maybe a new fuel filter, as well.
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Craig4937 (10-23-2018)
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10-05-2018, 05:45 PM
#8
o, yeah it sat for a month without being run and the battery is toast...and it only had leas than a 1/4 tank. So i filled it with chevron super and will take it for ride...
10-06-2018, 08:39 AM
#9
built ford tough
if you have a good scanner it will pick it up and show a pending code, just had that last week, it was intermittent at idle, i had recently replace plugs so i just swapped the coil
10-06-2018, 10:53 AM
#10
05 5.4l 3v s.crew lariat
Clean all your connectors replace all conn that do.t lock on ,use contact cleaner. Burnish all cop terminals . Did you replace boots on plugs They age and degrade with heat /oil.What kind of plugs do you have in there . Trash/ liquid in plug well, dirty plug porcelain . Are they torqued 25 to 28 foot pounds ,loose plugs common .
A cheap scanner is Torque pro$5 app / android phone / cheap amazon Bluetooth reader . It will tell you under test results the raw miss fire computer counts each cyl and threshold to set cel ..
A cheap scanner is Torque pro$5 app / android phone / cheap amazon Bluetooth reader . It will tell you under test results the raw miss fire computer counts each cyl and threshold to set cel ..
