Thnx specially to 01silvercc for all the help with cleaning the TB but now my mechanic don't have idea of the source of the problem the deal is this: there are 3 dead pistons the spark is good and injectors too everything seems normal but there are three dead pistons he is gonna change the spark plugs but he didn't think that that's the problem so I come to you for help I need my truck and If I told him what to check I would get it faster thnx by afterhand

 

Pretty much what makes a vehicle run compression,fuel and spark. If you have all that then you need to look further into it like do you have enough fuel pressure. Check cam and crank sensors too

 

The fuel pressure is all right gonna tell him that check that thnx