Hello all, I just bought a used 2006 Ford F-150 it has the Triton 4.6L V8. Seems to be running ok a little white smoke on start up, but the other night after leaving work at 5am when it was around 10 degrease freezing lol when I started my truck it was idling very rough like it was about to die but it didn't after it warmed up it was a little better but I think I seen black smoke from the rear end, but like I said after it was warm it sounded like normal so I started to head home and got about 15 mins down the road and it started to run very bad like it was bogging down and lost all power if I pushed on the gas all the way I was not picking up any speed but if I let off the gas the truck would jerk very bad and gain speed. But the next day in the morning it started up fine no problem I even drove it around town with no issue Any idea what this issue could be thanks all.

 

Any OBD2 codes?

 

I got several :
p0300 -Powertrain - random / multiple cylinder misfire detected
p0191 - powertrain - fuel rail pressure sensor circuit range / performance
p0306 - powertrain - cylinder 6 misfire
p2196 - powertrain - 02 sensor signal stuck rich bank 1 sensor 1
p2198 - powertrain - 02 sensor signal stuck rich bank 2 sensor 1
p0302 - powertrain - cylinder misfire 2

 

Looks like you have some maintenance to do. It probably needs new spark plugs to begin with - and I'd recommend you look at the FPDM for corrosion. It's on the crossmember above the spare tire, the backside is metal and corrodes due to contact with the crossmember. Unbolt it and look at the back, if it looks bad, replace it. Replacements come with standoffs to reduce the corrosion.

You may need a fuel rail pressure sensor, probably do not need O2 sensors but new fronts won't hurt.

 

Good deal thankso for the help I will check this out this weekend and will post back thanks again

 

2007 f150 4.6 stx 4×4 blows black smoke code p0452 p0191

 

https://www.obd-codes.com/p0191

https://www.obd-codes.com/p0452

 

But would these codes cause truck to blow black smoke i switch everything plugs coils injectors ftps charcoal canister

 

P0191 is giving you the hint of what can cause the problem. Study the links glc provided and troubleshoot.

 

P0452 i tried everything still blows black smoke could it be the timming

 

Timing is computer controlled, you can't adjust it.

 

ok p0191 is gone p0452 is still there could the 02 sensors cause black smoke

 

Not without throwing a code. Stop throwing parts at it and take it to a shop that can do a proper diagnosis.

 

02 sensir says open loop

 

Are you SURE there are no more codes - hard or pending? Can your scanner read out coolant temperature? It should go closed loop when it's warmed up. Maybe you need a new proper thermostat?