Boat Repair Guide: Common Problems for Non Starting Engines

The most common problem boaters' encounter is the engine failing to start. There are many reasons why you may encounter annoying situation; most of which are minor and easily fixable. Run through the following checklist to save time and money on guesswork repairs.
• Ensure the battery switch is on. If this switch is on turn the switch to the alternate battery.
• Do you smell gasoline? If so, the engine may be flooded. Allow the engine to sit for 20 minutes before attempting to start again. If the engine is an outboard, tilt the engine all the way up so the prop is out of the water.
• Is the engine getting fuel? Pump the primer bulb until firm. If the bulb fails to become firm the tank is empty or the fuel line is disconnected from the tank.
• Most boats come equipped with a kill switch lanyard. Check to see if the lanyard was accidentally pulled or removed engaging the kill switch.
• Fuel tank ventilation. The ventilation hose may become kinked or plugged creating a vacuum that prevents the fuel pump from sucking fuel into the engine. Loosen the fuel cap to allow air into the tank and try restarting.
• Engine spark failure can create confusing problems. The first thing most people do when there is no spark to the engine is change the plugs. Rarely is this the solution. The first thing to do is make sure the batteries are fully charged. Low batteries will prevent the starter from functioning properly and cause spark issues. Even though the engine turns over, it does not mean the batteries are fully charged.• Fuel filters come in a variety of styles. If your boat is equipped with a fuel filter with a clean out valve on the bottom, unscrew the valve to allow water and gunk build up to drain. In addition you may need to clean the plugs if the fuel had water in it. Water can foul plugs.