Originally Posted by
flyinwalenda
The only issue I can see is lifespan. Is it going to be like a typical glow plug......could last a week, a month, or year(s)? Compared to spark plugs that typically last years.
Unfortunately, the glow plug could last for a year or more or fail right off the bat. It depends on so many factors. Now I have experience with the P3 Turbo plug. The first plug worked for one tank of fuel and then quit. The second plug has been going for quite a while with many flights. Something like 50 flights or tanks of fuel now through the engine. I have gone through two gallons of gasoline/oil mix fuel with the engine (a NV-Engines GX40) an have a fresh gallon mixed up now for it. But that doesn't mean I ran two complete gallons through it. When the container got low, I threw it out, out of concern it might be getting stale on me. So that second glow plug has been working all that time Ok though.
So with a new engine, you can sort of expect that first plug and first engine run to trash the plug. It can be quite frustrating to not have a spare then. Probably something about "Murphy's Law" in there someplace.
Spark plugs eventually go bad, from nothing else than carbon build up over time. With some of my other engines, I was really surprised in that the spark plug and engine still ran OK even though the spark plug was all coated and gunked up with carbon deposits.