I am a newbie and in need of help with my truck. It was running rough so I took it to the mechanic. He got codes that indicated the timing chain. He changed the camshaft and crankshaft sensors hoping that would solve the problem, it did not. He then quoted me $1200.00 to change the timing chain which I could not afford so I decided to do the work myself, I have a Haynes manual and I am pretty handy when I have instructions. Anyways I changed the timing chain, timing cover, spark plugs, spark plug wires, timing cover seal, distributor rotor, distributor cap, camshaft sensor crankshaft sensor and the belt. Now the truck will crank but not start. I have no spark at plug #1, but I have spark at plug #3. I tested a new ignition coil and this did not solve the problem. I have plugged in a scanner but did not get a code. Please help, I am having a lot of trouble figuring out what to check next.