hi guys looking for help here...i just installed a used engine into this vehicle which is the 3.0 6cyl. the old one ran fine and started right up except for knockin. i went back and double checked that i have all sensors connected and still wont start. i tried starting fluid...the one plug i checked had spark and all the front plugs were wet with gas when i pulled them also. i dont understand the problem and need someones assistance

 

If you have wet plugs then you have no spark or too much fuel. See if you have any pending codes. Then check your fuel pressure. Does it sound normal when it's turning over?