Signs of a bad boat impeller are either boat engine overheats when you try to accelerate, loss in impeller vanes flexibility, physical wear & tear like cracks in impeller vane roots, melted or worn of vanes. Even if you see less or no water coming out of tell-tale, it might be due to a bad impeller.
How often should an outboard impeller be replaced?
Generally speaking a 5 year interval likely works well for most folks. TomP. Mercury recommends changing the impeller every 300 hours…its in the owners manual. It’s an easy enough job to do yourself if you have some mechanical skills.
How often should you change water pump impeller?
All impellers should be changed at a minimum of three years. Some will not make it that long depending on many things, how often it is used… too little and it will deform and tend to dry rot. Use it alot and it will wear out from spinning around in it’s housing.
Can a water pump impeller go bad?
If your impeller fails, the pump can’t pump cool water to the engine causing your engine to overheat. If you catch that your impeller is failing early on, you might avoid major problems. However, if you’re not fortunate enough to catch a bad impeller, the results can be catastrophic to your engine.
What causes boat impeller failure?
Impeller pumps generally fail in one of two ways. This is usually due to impeller or housing wear or impeller age. The second failure mode is sudden, catastrophic failure, with the impeller usually loosing some or all of its blades. This is usually caused by running the impeller pump dry.
Should I replace my impeller?
Correctly installed impellers may last for several years, but you should stick to a schedule of preventative instead of emergency maintenance. Just the same, an impeller will eventually fail while in operation, and usually at an inconvenient time.
Where can an impeller be found?
The Humble Impeller Found in: Engine water pumps, toilet systems, refrigeration and air conditioning units, wash down pumps.
