Bob Huntress
Member
I don't want to sound presuptous. I don't know everything, yet, I've noticed that a recurring problem occures, engine not starting. If the engine has a fully charged battery, and turns at proper speed, there are two reasons that a gas engine will not start. One reason is no fuel is getting to the cylinder, and the other is no spark. I usually factor out the spark first by removing the plug wire from a spark plug and inserting a spark tester with the ground clamped to the block. If a healthy spark jumps the gap of the spark tester, we can act on the engine having good spark. The fuel can be checked several ways, such as spraying ether into the air intake and listening to whether it fires enough to burn off the ether. We can also remove a spark plug and smell for gas etc. Once we know which system is at fault, we can start factoring down the most likely causes. I hope that might help, and I hope it doesn't sound presuptuous.