That's an odd one, I was having issues with my M998, i came back from off roading and the next day I had a real hard time starting it and tons of white smoke once it got going, after checking around I found that the glow plug terminal where shot, all pited and broken, I replaced them as well as the glow plugs, then it was fine for a while, sometimes it started fine, other time lots of white smoke, I also got the matching set of the KDS SSS from Erik's, since then, it starts like a charm, a slight puff of black smoke and that's it.
I also installed the ground kit from Kascar.
If you have swollen glow plugs, get this tools, it works: GM GLOW PLUG PULLER TOOL GPET-001
from JJ and A Racing Products
I also installed the ground kit from Kascar.
If you have swollen glow plugs, get this tools, it works: GM GLOW PLUG PULLER TOOL GPET-001
from JJ and A Racing Products