Have you tried then pump out? In the 4825 set I bought in Malta, the pump had a slight leak where it had been separated from the sprue. (There is a little dimple where the sprue was.) However, a bit of polystyrene glue will solve the problem. However, I've never found the new pressurised system all that good and really prefer the first "press a knob" pump system.
No I haven't tried the pump out yet as I was scared that I would get water everywhere like I did with my old one. I quite liked the old pump system (even though mine leaked everywhere

). It's cool the way that the pumpy bit folds down and the whole unit can be transported in it's own section of the engine

Another part of that set I really like as well is the hydrant pavement piece with cover, as I have some modern shops, and can replace a similar pavement piece with this one, and then I will have a cool hydrant in the pavement

The ramps for the hosepipes I also like, and they can also be used with road construction for the hoses of the numatic road drills as they often use across the road
