My 2008 Hino 338 with 75k miles used for local service that has never overheated had a problem blowing out coolant and setting off alarm. Dealer replaced head gasket at a cost of 5500.00. Took on the road and alarm sounded again. Dealer had the head pressure tested, no problem but claimed injector cups were now the problem. Spent another 2300.00 to have fixed. Took on the road and immediately the service engine soon light came on. At the dealer now and claiming that the injectors miraculously have now gone bad. Being quoted 8000.00 and possibly up to 12000. I am not sure weather to give them the go ahead or call my attorney. Any thoughts?