2003 lb7 white smoke
 

after replacing injectors had one cup come out cleaned and reinstall. no smoke at start up but starts after worming up. if this problem is injector cup or cups can i remove glow plugs and pressure test cooling sys. to find which cyl . is leaking

yes, you need a pressure level (long piece of plastic tubing with red food colouring and attach it to something in a U shape) and remove your temp sensor (ontop of your thermostat housing), use a pipe fitting that threads into the hole, and attach it to the tubing, i removed all the glow plugs, and then turned the engine over by hand until a cylinder reached TDC, attached the compressor to a fitting that threaded into the GP hole and pressured the cylinder, if the fluid in the tube moved even slightly you have an air leak in your coolant, most likely head gaskets:td:

thanks for info. will be working on it this weekend

to all that read this i found bottom of fuel filter leaking at o ring for water seperator tighten water sw and test run truck all is ok thank you

still smoking?:humm:

no smoking at this time truck run good getting about 18 mpg thanks