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When you are turning the key to start position was multiple times what exactly is going on? Does the engine turnover at all or do you just get a single click or clunk from the engine compartment?
Unfortunately it is really late here on the East Coast. Do you have a scan tool to check to see if there any malfunction code set in the engine control computer? When it is cranking over and not starting have you checked to see if it's losing spark or injector pulse and have you checked for fuel pressure when it's not starting? I will follow up with you in the morning.
check these things and get back to me tomorrow it will be a little difficult being halfway around the world our time schedules will be opposite. We can work through that if you have the equipment and the mechanical ability we should be able to get this resolved.
Are you getting any codes? Did you check for them? Is it loosing spark?