OK.....If you have saprk and fuel at the right time you get ignition!! Fact not fiction.
If you are sure you have ample spark leaping across the plug gap, and you are sure you have a air fuel mixture entering the cylinders then the problem with no explosion is simple.....IMPROPER TIMING.
Your spark must occur when each piston is near the top of the compression stroke and both intake and exhaust valves are CLOSED.
Too early of a spark results in ignition (bang!!) and back fire past the intake valve out the carb.
Too late of a spark reults in ignition (bang!!) and after fire past the exhaust valve into the exhaust system.
CHECK IGNITION TIMING IN RELATION TO VALVE TIMING AND PISTON POSITION. Sounds to me as if your timing gears/spockets/chain etc are completely shot! Or that the distrutor is installed incorrectly (out of time with the crank/camshaft). May sound stupid, but.....are you sure you have the secondary wiring (plug wires) installed correctly? Recheck firing order, direction of distributor rotation.
Last edited by WillsLimo; 07/02/2009 12:35 AM.
