Fuel puddle in the inlet of the engine, smoke in the cockpit, smell of jetA fouga - Paris Jet - CM191

Old seal braking off like a piece of cheese

If you have a fuel puddle in the inlet of the engine , and some smell of JetA in the pressurization system, or smoke on take off when pressurization is on full hot, you have a good 99% chance that the seal called Mariac seal ( most modification was done by the French Air Force because before it was a o-ring , and some engines still have those O-rings) need to be replaced . That seal was replaced every 5 years at least with the French Air Force.
That seal is on the fuel cutoff valve on the engine fuel pump on the accessory support in the bullet of the engine.