Hi guys,

Im owned a Ford F150 XL reg.cab 4.2 V6.
I bought it 2months ago. No idea off any history, so i changed the oil, filters, air filter, plugs wires and coilpack.

But i've got a problem. When the truck stays a while, it has a bad start. It takes 10sec till it will run and runs not very nice, a bit rough. When i drive a few km. Its better and runs and drive OK.
When i drive a longer distance it will starts directly when it stays about 6/7 houres.

Sometimes it looks like it will starts at once but then u can hear it wil not run in 10sec.

Anyone any ideas?

Thanks!

 

Oh. An no codes and no light

 

Check the backside of the FPDM for corrosion. It's on the frame rail above the spare tire.

Also, you may have leaky fuel injectors.

 

But i hear, the FPDM will be Ok or defect. Or is there a way between it? Car drives ok on gasoline.

 

Yes it can be I between. Sometimes working, sometimes not. Check it to be safe.

What brand plugs, wires and coil pack did you use?

 

Ive used all motocraft.

 

You mean this FPDM?

 

Yes! That's shot.

 

That's definitely the issue. It's cracked in half.