How do I know if my bilge pump is bad?

Connect the probes from your multimeter to the positive wire from the float switch and the negative lead from the boat’s electrical system, and then lift the float by hand. If you read any voltage over about 12.3 volts, your float switch is OK and your pump is likely faulty.

Do bilge pumps have fuses?

Install bilge pump circuit wires Verify that the standard 15 amp fuse installed in the panel is appropriate for both the circuit wire and the bilge pump. Remove and replace with the bilge pump manufacturers recommended fuse size (20 amp maximum).

Can a bilge pump get clogged?

Problems with centrifugal pumps typically involve clogging, defective automatic float switches (if installed) or corroded electrical connections, a common problem with any electrical gear installed in corrosive environment of a vessels bilge.

How often should a bilge pump come on?

It should check for water every two minutes. Nothing should come out of the bilge unless it has been raining or you have been in rough water. Next time you have her on the trailer use a water hose to fill the bilge and watch for where it comes out of the hull.

Where is the fuse for a bilge pump?

There should be a 5 amp fuse. If the boat has a bilge breaker box with optional hour meter the fuse will be in the box. Either way it shows it should have been located on the port fwd bilge bulkhead.

Does a fish finder need a fuse?

Yes, you need fuses to protect your equipment, so that, for instance, a power surge doesn’t fry it.

How do you service a bilge pump?

Here are a few important maintenance steps to follow every time you take your boat on the water.

1. Test the Pump Often.
2. Invest in Bilge Cleaner.
3. Examine the Bilge Pump Wiring for Damage.
4. Check and Replace the Fuses.
5. Keep the Screen Clean.
6. Watch for Damage to the Outlet Hose.
7. Add Drip Pans for the Engine.

How to troubleshoot a bilge pump that is not working?

Try the manual switch at the helm. If the pump runs, then the problem is most likely with the float switch. 2. Check the float switch for debris in the bilge preventing it from operating.

How do you unblock a boat bilge pump?

Alternatively you can bring a garden hose down in the bilge and try running pressurized water through the discharge hose to clear any blockages. If you do this and water comes out the discharge, you know it’s free of blockages.

How does a bilge pump float switch work?

A float switch works by floating upwards as water fills the bilge. When it floats high enough, an electrical connection is made, turning the pump on. Float switches are usually mounted inline with the positive (red) wire leading down to the bilge pump, though some have an auto-on-off switch installed inline.

Why won’t my pump run in automatic?

If wiring looks good but pump still won’t run in automatic with float switch elevated, the switch may need replacement. Wire nuts like these have no place on board.