won't start after cyclinder heads repalced
Hello, I am new to this forum. I have searched, unsuccessfully for help with a problem I am having. I am hopeing that one of you nice people will take time to give me some pointers. thanks in advance.
on a 1994 4.0l 6 cyl I replaced the cylinder heads. I followed all the instructions in Haynes manauls. torqued down in order to specs. all new gaskets. new bolts. heads were used so I had them shaved/resurfaced.
My problem is the truck will not fire. Without plugs it is smooth. With plugs it bucks. I have triple checked the plug wires to the plug block. It just seems 'out of time'
what else can i check ?