I flew controline jet speed with this pulsejet many years ago and starting was always an issue. I fabricated a Ford Model-T auto coil to provide a spark to the OS sparkplug supplied with the engine. It really needed a hot spark to ignite the fuel which was white (or unleaded auto gas). A large barrel auto tire pump was vigorously pumped to supply the starting air. Once lit, and you knew it by a deafening roar, the air and spark lines were quickly disconnected followed by a skidding takeoff and flight. The fuel level, with respect to the ventur1 was critical in that the pulsejet would only draw fuel for about 1/2"or 12 mm. The air supply had to be furnished in bursts, not a continuous flow. A more modern setup would use a compressed air supply/tank and a trigger valve to furnish the bursts. A common BBQ gas lighter (spark type) can be inserted into the tailpipe for the initial ignition. Once running, you had to supply cooling air either by flight or a blower otherwise the tailpipe will begin to deform in about 30 seconds. I do not believe that a diesel glow plug or a nitro glow plug would suffice to ignite the fuel unless driven to almost a white hot condition. I hope this all helps. Let us know how it all goes and good luck.
Rgds,
Art ARRO