My truck has been smoking in the mornings alot and on cold mornings it is horrendous!
So I checked the glow plugs, they are fine.
Tested the voltage to them- nothing!
Found the relay for the glow plugs... This is the start of the fault.
The contacts have 12v on one side and nothing on the other- thats fine
The coil should have 12v between the two coil pins, BUT it does not.
It has a constant 12v on one pin when you test each one to negitive.
That tells me the other pin on the coil is the negitive and is the switched one.
With all that in mind, does anyone know where/what controls the timing of the glow plugs? Which would switch this negitive.
Cheers!