No spark on car?

1 What are you working on? 2 Have you tested ignition module and coil(s)? 3 Have you tested crank/cam sensors? 4 Does it set a code?

crank position sensor or cam sensor

please post what vehicle and model year ect

You have a cam sensor inside the distributor that could also be the problem.
You may need to get a repair book or shop manual to get the test procedures.
The coil gets power from the ASD relay which should also be tested.

Pull off the coil ignition cable at the distributor and check for spark coming out of coil when cranking engine over. Use a heavy rag or glove to hold the wire 1/4 inch from a metal ground. Should see a strong blue spark when cranking to verify ignition is good. If no spark, check for battery voltage to coil on the coil primary. If you have current to the coil, suspect a bad coil, ignition module, crank position sensor, or cam position sensor, or pcm. The coil, ignition module, and sensors can be tested before replacing.

does the immobiliser light go out on the dash when you insert the key in ignition. Also check for fault codes by bridging terminal 4 and 13

check the crankshaft position sensor

Does it crank over at all? or just nothing when you turn the key? Do all the electronics still work in car?

had the same problem in mine we found it was the cam shaft positioning sensor. my van had shut off and we had no current to plugs and at first thought coil pack but still nothing. no power to coil pack. then found sensor no good. also we replaced the sensor with an after market sensor and worked fine for couple months then started to shut off again. after a little research found we needed original cam shaft pos sen from dealer and since then no problems. hope this works for you.

have you changed the ignition wires? perhaps firing order crossed? if not coil pack or ignition wires faulty how do you know it is not "FIREING" on 1 & 4 have you tested it with a spark tester tool???