my engine has spark but will not run on 2 cyl i have gas, spark, all tests check out good is the spark box efecting timming this problem is killing me please please help.
does it have good compression in the bad cylinders if not that could cause it or maybe you have a water leak into the bad cylinders look and see if the spark plugs in the bad cylinders are cleaner than the others if they are new try putting in an old one and see if it come out any cleaner after 5-10 min of running the engine
dont know if it runs or not but even if not try to start it with the plugs in and then after like ten cranks or starting stop and pull the plugs in the bad cylinders out right away and see if they have any gas on them or not. if they dont have any gas on them or you cant at least smell any gas on it then there's your problem and you need to find out why gas isn't getting in there if they do have gas on them then it could be to much gas flooding it out or the timing could be off. could also be somthing really stupid like the wires got put on the wrong cylinders i know this sounds stupid but crazier things have happened
