96 Gsx Trouble With Propulsion

[ochuck88]

I have trouble when i go to take off the engine revs but has trouble planing. When it does plane out it goes alright. The impeller and wear ring are good. The intake grate is broken will this make it not plane and make it cavitate?

thanks

 

[JoeZ]

per Shop Manual:

Possible cause for Engine Peak performance being delayed until higher RPM range is reached:

• Weak spark
• Carburetion, jetting too rich / lean
• Throttle does not open fully
• Low compression
• Exhaust system restriction
• Water in fuel or oil
• Debris in needle valve
• Impeller leading edge damaged
• Twisted crankshaft
• RAVE valve does not open​

• RAVE valve is stuck opened​

 

[ochuck88]

THANKS. The engine revs right up tyo 7000rpm no problems except it wont get on plane right of way but when it does its fine except with a little cavatation. I replaced the wear ring and impeller the only other thing i see is my intake grate is broken and was wondering if that could cause cavitation?