Nissan Repair: Nissan Z24 2.4 Ignition Adjustment, nissan z24, nissan pickup

Question
Hello,
I am having trouble with a 1987 Nissan Pickup with the 2.4 Z24 engine. The engine rattles and spark knocks just like it is of time "Terribly". However I have checked both the cam and crank marks both are fine also the ignition timing is set perefectly 10 degrees. I have never run into anything like this before. I have changed both the Computer and Distributor with no luck at all. As soon as I give the vehicle any gas at all it rattles like crazy. Whether it is "Hot" or "Cold" it still rattles. The vehicle misses like "Crazy" also. Your help would be greatly appreciated.

Thank You,
Jody

Answer
Change to high test fuel or retard the timing two degrees and the spark knock should dissapear.  If you have any problems email me back.  You might also check the plugs to make sure that you have the proper heat range.  Too hot and the engine will develop spark knock.