Starting a gas engine is easy. Assuming there are no mechanical problems you need three things. First Spark. Second Fuel. Third Compression. Lets say the compression is good and there is no water in the oil. Check your fuel for water in the sediment bowl. Take it off because if it is full it will be deceiving. Be sure to drain the tank and carb of water if you find it in the bowl. Then add dry gas. Check spark with a spare spark plug hanging against or set on the block under its own weight. ABSOLUTELY DO NOT USE A VOLTMETER - IT WILL KILL IT UNLESS IT IS A VERY GOOD BRAND and even then I have my doubts. If you hold it firmly against the block it probably won't zap you but I won't promise you that. Use some ether. If you have wet spark plugs you will need to dry them. Do not use WD-40 to dry the wires. Use silicone spray. The WD-40 will work fine but will evaporate and you can have the problem again. I silicone to get rid of water and keep it away. I use PB-Blaster to free rusted bolts and I use spray white lithium grease as a lubricant. WD-40 is great but it evaporates eventually and I just think the PB Blaster is better. I do use WD40 when rebuilding engines. It will displace the water on the block after I wash it with soap and water and then if I let it sit for a few days it will evaporate. If I don't have the time I used the WD40 then use the good (like CRC Brand) Brake kleen to remove the WD40. The cheap brake cleaners leave a residue and some even have water in them. good luck this weekend. Best of Luck.
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