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I have a 01 F350 i just had some of the injectors replaced. Now i have white smoke every time i start it. I think that it maybe my gp relay that is out and i would like to test it before i get a new one. i have power when i drive it but the white smoke only goes away when the motor is hot had the heads tested the are OK not losing oil or coolant. the hot air relay wont get power i read that it only kicks in when gp relay has turned off.
i had 3 replaced a month ago it didnt smoke then and then it started to smoke about 200 miles after they went in they just replaced 2 more and it is still smoking. I have the grey square gp relay can it be test to check if it is good or bad.
It can be tested easy enough. I don't have the details someone should chim in. Did you change the glow plugs while you were in there? If injectors are bad glow plugs are cheap. Ohm them out also. How cold is it there?
Chet
i had 3 replaced a month ago it didnt smoke then and then it started to smoke about 200 miles after they went in they just replaced 2 more and it is still smoking. I have the grey square gp relay can it be test to check if it is good or bad.
Grey square as in Glow Plug Control Module?
Like this
If so I think you will need a diagnostic tool to test fully.
yes that is the one, it is about 80 i live in victorville ca its the high desert. No the didnt replace the gp i had it done on a warrent that just expired so i didnt have to pay much to get them fixed