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M/e trouble-what to check if Engine is not starting on air and fuel?

Engine not starting on Air: -
* Low air bottle pressure or airline valve may be shut.
* Air bottle isolating valve or automatic valve or distributor not functioning.
* Control air valves faulty or less control air pressure.
* Starting air automatic valve jammed.
* Turning gear engaged.
* Reversing has not taken place completely.
* Control valve for fuel or start is not in its end position.
* Bursting diaphragm(disc) on start airline damaged.
* Fuel lever on maneuvering stand not on remote mode.
* Auxiliary blower not running or not on ‘auto’ mode.
* Emergency stop has activated.
* Interlock is operated.
*Cylinder air start valve defective or sticky.
*Piston not in firing mode. 
Engine not starting on fuel: -
*Less fuel in service tank.
* Fuel Oil filter is chocked.
* Fuel Oil supply pumps not delivering required pressure. Or fuel pump tripped.
* Puncture valve still active.
*Fuel oil temperature to low.
* Fuel level on local maneuvering stand, is not on remote stand.
* Fuel rack stuck.
* Fuel pump malfunctioning, jammed plunger.
* Injector nozzle needle sticking or holes blocked.
* Compression pressure is too low due to broken piston ring or exhaust valve not closing properly.
* Fuel pump relief valve leaking.
* Start air pressure insufficient to turn the engine fast enough.

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