1983 280zx:I had just started the car and then it shut off. Now it will crank over but wont start. Have spark,inj. pulse, gas. If i take the distributor out it will show that it is 180degrees off. I will put #1 piston at TDC and readjust the distributor so it is right again. Then I will purge the engine and try it over and then pull the distributor cap off and it will be 180degrees off again. should I do the timing chain? The motor has 172k miles. PLease help me!