Starting issue

Max162

I've been trying to find the starting issue with my 54 Super Wasp recently and haven't found it so far.

The car works on 6V positive ground, and every time I try to start the engine, it seems to die at the moment that the engine is starting to go on its own, as if the Bendix is retracting way too early.

The battery itself is good, got plenty of fuel and sparks and the starter has been rebuilded at least 2 years ago. The carbs adjustments has not been touched and were working great last time I drove it. I've ordered a new starter solenoid for testing, but I don't really know if it's the issue.

Any clue of what could be the problem?