We have an old lx665 that in the past few winters on colder days I have used a "torpedo heater" to warm up before it would start. I assumed the glowplugs and heat plate were bad, but it started. The starter recently went out and after replacing the starter the machine won't start. My mechanic says "all but one glow plugs are bad and the heater pan isn't working and that's the problem". I argue that even with bad glowplugs and heaterpan, if I warm the motor with the torpedo heater it should still start, regardless. What else could be the problem? Any suggestions, ideas, conmments----HELP!! Thanks, Bryan.