Originally Posted by
Old Fart
Hello bob a few years back i ran a 777 in on the bench for a flying friend.In the first hour the only way i could keep the bottom three to four cylinders running was to add 10% petrol to the glow fuel mix.
I just use onboard glow to keep my Seidel / Evolution radials running while breaking them in. They do take a while for that, up to three hours or so. They typically can run without the onboard glow after about an hour. Lots of short (5-10 min) ground runs, interspersed with cool-downs!