theoldwizard1 wrote:
The #1 most common problem with small engines is ....
After some review, I want to change the sequence of tests. Some of theses are easier to do on some models than on others
(especially small 2000W and under generators) that have the internals encased in plastic covers/housing.
#1 Spark check. Remove the spark plug. If it is very wet/oily or has other contamination on it, REPLACE it (
SparkPlugs.com). Put the spark plug back into the boot
(a dab of silicon dielectric grease of the very top and on the ceramic will make is slide in easily) and lay it on top of the engine so the the threads of the spark plug make goo contact with some metal part of the engine. Make sure the switch is ON and pull the cord. If you do not see spark,
remove the oil level sensor wire and try again. If you still do not get a spark, it is time to see a professional.
#2 is validating fuel flow. With the spark plug still out, spray a little carburetor cleaner
(or use a squirt bottle and gasoline).
If you are trying to use a gas can and you get TOO MUCH gas in the hole, you have invalidated the test. Re-install the spark plug and pull the cord. If it does not fire after 2 or 3 pulls you have dirt blocking the fuel flow between the tank and the engine, most likely in the carburetor.
#3 is air flow. Almost never a problem unless you operate in EXTREMELY dusty conditions.
That is it ! The 3 things to make an engine run, spark, fuel and air !