Originally Posted by
nrm1977
I've been having a issue in which I'm going through glow plugs pretty fast in my nova 4btt. I'm using the c6tgc plugs. Does this mean I'm running my engine to rich? The plugs seem to have caster oil on them....dark color but, the residue comes off if I wipe it. Any thoughts guys?
On a side note- I've seen people running the 4btt 3.5 turns out HSN and 4.5 turns out on LSN....In which I cant even come close to that on LSN...4.5 turns out it lean bogs insanely. Idle is set .6mm.
How fast are you going through them?
Needle settings vary so much depending on the climate, altitude, fuel, and all that stuff.
I notice the biggest change from humidity, temp, and especially altitude.
I say if in doubt put the top end flush and the bottom flush and start with the bottom end first, then go back and tune sparingly on the top. Don't go by turns out, it's too vague on the needles, with the exception of the idle, you have that perfect for most circumstances. The bottom usually runs a little lean when it's right, just before it runs on in the turns.
It sounds like you have the top lean and the bottom fat, and the lean top is burning it up, but that's just a guess.
If you ever have a doubt put the top flush and leave it there until you have the bottom end right and the idle.