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2003 Honda NPS50 Ruckus scooter Here's my situation: around last April my scooter began to feel like it was running a little sluggish and didn't sound right. Unfortunately, I knew very little about scooters and maintenance and like an idiot I assumed adding more oil would help. I now know Ruckus' don't really burn any oil and rarely need oil just added. After that, a seal in the same casing as the kick start blew. A friend who is a mechanic replaced it and it seemed fine for a short while. Soon after the engine start making a knocking sound / grinding sound and has hardly any powe

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Hello! Well, I think you have actually diagnosed your own problem. By overfilling the crankcase with oil - you very well may have just fouled the spark plug. This is best case scenario, to be honest. A very very common reason that scooter owners will experience a loss of power is due to oil over-filling.

Worst case scenario is that due to the overfilling, the oil began to cavitate, or foam, and as a result did not protect the internal parts properly and they have become damaged. The sound you described is likely (I hope that I'm wrong for your sake) internal damage that is going to result in engine replacement.

I would recommend draining the oil, refilling it to the suggested level (in your case is 0.6 Liters), and also removing the spark plug and cleaning/replacing. If this doesn't work, I'm afraid that further internal inspection will be needed, and at that point you're talking about the very high possibility of engine rebuilding/replacement.

I hope this helps and wish you all the luck. Thanks for using FixYa!

-KCGTODAD

Posted on Feb 02, 2010

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That does not sound very good and I would suggest you have it checked before you cause any damage.Start with a compression test and see what happens.

Posted on Feb 02, 2010

  • heeman mohun Feb 02, 2010

    Loss of power may be caused by damaged to the combustion chamber,hence i suggest you start with a compression test.

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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