Solved

Engine Condition

Did you relog (better clear browser cache as well if you're not using the App) already? Most likely it's just a lag related problem. Maybe the engine swap wasn't recieved by the server properly (relogging would add the engine back to your counter and you'll have to swap again), or the engine part of the game UI didn't update properly (after relogging your engine is showing 100% as it should). Please report back so Yunus knows if the problem was fixed or still needs investigation.