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hi
my car cranks but will not start
i did checked it with obd tool no fault codes yet
the injectors delivering fuel
i pulled ignition coil inserted in spark plug ground it to valve cover to check the spark while cranking the spark is very weak and small replaced the cps same thing
 

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When the spark is weak when not under compression there could be no or less spark when in compression.
Each section of the ignition system needs to be checked. You can use info' re' other Manufacturers vehicles with a similar ignition system but better to have the values re' the one you have.
Tracking inside the distributor cap or cracks on the dist cap can result in a weak spark. I think one system was called CD which was a system potted in resin it was possible to see internal arcing at night.
On my 1996 A6 ABK eng' the hall sender had failed and another time the timing belt had slipped.
 
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