hi all new to forum. ill cut to the chase doing an engine swap on my 2007 ford fusion 2.3L. I got the old engine (engine being replace due to rod knock) out and swapped all components over to the new used engine. Filled it with all fluids (oil, trans oil, power steering, coolant) also put in new plugs. I used my original wire harness for the new used engine. Dropped her back in and made all connections. But I'm having a problem getting her started. I turn the key and she cranks and then suddenly stops then starts to crank again. I would say it cranks for a 3 count then on 4 she stops and then cycle is repeated. I checked the fuel line to the fuel rail to make sure it was getting gas and the motor was. One thing I tried and thought was strange was that I depressed the gas pedal all the way down and tried to start her up to cycle trans and oil throughout and I noticed that it continuously kept cranking but as soon as I released the gas pedal it started to repeat the same process I stated before. Going to check the spark plugs tomorrow to make sure gap is correct and to make sure coil is firing to the plug. Any advice would be greatly appreciated.