Answers: When it starts to turn over, does it fire and then stops the engine turning beside a sudden "jolt"? if so, check he timing is correct, could be too far advanced. Also, check starter motor and solenoid are working properly, also the connections to this. If you have have the car garaged for e few months, it could be that the fuel is considered "Old", sounds stupid but beleive me it can be this, i know, cos i rebuild my porshe from scratch and found duplicate symptom, i changed the fuel and it went close to a little rocket beside no prob's. can't garantee this is the same as your prob' but it may facilitate you on your way to finding the error. best wishes, good luck.
1. Check the coil to be sure it is putting out plenty spark to the plugs.
2. If Coil is good, check timing. It may own jumped a tooth or two. You'll necessitate to reset the timing and replace the timing gear/chain set. Careful not to disturb the distributor performing this repair or you'll spend forever trying to get it put money on where it belongs. If it jump timing and you do get it to start a piston might hit a spout and do more damage.
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