Do I need a new impellor?

[cajunhondaman]

First let me thank SBT for this wonderful and informative forum!

Now.... I've recently been working on a 900zxi that hadn't been run for 2 years.

Got the carbs cleaned out and it ran good on top end, but boggy out of the hole....

Adjusted jetting and this thing PULLS.

Now the QUESTION:
after riding for 30 min with the new carb settings, the engine is "slipping" when I hit wide open throttle from slow speed. I can back off the gas and feel it "bite", but if I hit it too hard it slips again.
Do I need a new impellor or can it be a slipping bushing that can be changed?

Thanks
Cajun [img]smile.gif[/img]

[Technical Support]

You are indeed cavitating - read the tech article here on inspecting for pump damage. I would send your parts to www.impros.com for attention.

[cajunhondaman]

So you say I've got a Pump problem?
NOT an impellor problem?

I don't have a manual on this bike. Please advise on where I should proceed from here.

Thanks.... I'm listening!

[Technical Support]

'Pump' means the impeller, housing, wear ring, bearings, staotr vanes, etc. - You could have one or more problems in any or all of those areas.

[cajunhondaman]

Thanks,

After reading the Tech articles (very helpful), I came to that conclusion!

I tried to search this issue and avoid asking redundant questions, but couldn't find a clear solution.

Does the impellor have a rubber bushing between the hub and the spline (like an outboard prop)?

If so can I buy one and change it myself?

Thanks again
Cajun

[Technical Support]

Yes they do, and yes you can get it separately, however it's extremely rare for them to be damaged alone. They come with new impellers.