View post: This 799-Piece Tool Set Is a 'Lifesaver' — And It's Only $85 at Walmart This spark plug tester features an innovative dual-socket design, allowing you to test two spark plugs simultaneously ...

Purchasing specialized testing equipment to fix your own outboard motor is expensive. Often a DIY mechanic can fabricate his own special tools making troubleshooting a lot easier on the budget.

Simply put, getting the maximum power from any race engine is a function of the temperature, pressure and timing of combustion gases in the cylinder. Since it would be expensive and impractical for ...