The first IDI I bought had two glow plugs snapped off in the heads (both on driverside), it was a ****** to start until I added an ether injection system. The system actually came with a pressurized bottle similar to a small propane torch in size which I mounted under the hood, then a flexible line ran directly to the air cleaner. Mechanical lever inside cab allowed me to shoot ether from the seat just before cranking engine. Ran it that way for several years to avoid pulling engine and fixing correctly which I eventually did. That same engine with repaired heads is now in the truck in my sig. Bottom end has over 300,000 miles + I added a factory turbo, and routinely run 50 / 50 used motor oil mix.