When your valves do not have clearance, a number of things may happen. Your valves will not be closing all the way, you can lose horsepower/compression, poor fuel economy, backfires, hesitation, stumble when idle or take off, it will make your engine run like crap! When you lose clearance on the valves, the engine almost acts like it is out of timing. When the valves have excessive clearance, they will be noisy.
The engine on a train is behind the driver.
The engine of an old train would be a steam engine.
A train doesn't know which track to go on, it has no intelligence! What happens is that the signalling systems switches the train left or right at forks in the track known as points. These have small pieces of movable rails which direct the train onto the desired track.
Many things could happen but to start with, the check engine light will probably illuminate.
The engine or locomotive.
The "Engine".
IF there's enough clearance - then it just passes over you. If not you get mangled.
In swedish 'lok' means 'train engine"
That depends on the size of the train and the country it happens to be in.
In most cases the car at the front of a train is the engine or the locomotive. However, sometimes the train is pushed from behind and then the engine is the car at the end.
The weight of a train engine varies depending on the type of engine. A diesel engine can weigh as much as 250 tons while a steam engine would be about 100 tons.
The 1987 Nissan Maxima VG30E engine uses hydraulic valve adjusters (also known as "cam followers") which cannot be adjusted. Therefore, there is no specific valve clearance. If you hear valve noise, it could indicate that there's either excessive wear of valve train parts or clogged hydraulic adjusters.