Daytona20
Member
I have a 97 GTX and I am wanting to find out if the following situation is normal. Let me just say that the seadoo is running great and I can get up to about 50 MPH, 53 if I shift most of my weight towards the back of the seadoo. Even with my young daughter and my wife (470 lbs of passengers) it will still do about 48 to 50 MPH so I am quite happy with my purchase. So dont get me wrong I am not complaining about how the seadoo runs I am just wanting to find out if the following situation is normal.
After I get the engine warmed up, I will hit the throttle and the engine will rev up to about 7100 RPM. Once the seadoo starts planing out, the engine RPM will gradually drop to around 6650 to 6720 RPM's in about 5 seconds and will not go any higher . The seadoo will then get up to about 50 MPH and will just run at a steady RPM in the 6650 to 6720 RPM range and continue to run at that RPM and speed until I let off the throttle. The RPM readings are from the onboard guages. You can tell that the RPM drops off by listening to the engine so i dont thing it's a guage problem
I replaced all of the grey fuel lines. I actually chopped open all of the fuel lines and I could not find any sign of degredation. Removed the carbs and cleaned the filters. No gunk in them and the filters washed out easily. Fuel switch was also clean. Removed inspected and cleaned RAVE valves. Replaced plugs with properly gapped plugs. Put it in the water yesterday and still performs the same.
So my question is? Is it normal for the engine RPM to drop back a little bit after that initial surge or should it stay at that higher RPM?
After I get the engine warmed up, I will hit the throttle and the engine will rev up to about 7100 RPM. Once the seadoo starts planing out, the engine RPM will gradually drop to around 6650 to 6720 RPM's in about 5 seconds and will not go any higher . The seadoo will then get up to about 50 MPH and will just run at a steady RPM in the 6650 to 6720 RPM range and continue to run at that RPM and speed until I let off the throttle. The RPM readings are from the onboard guages. You can tell that the RPM drops off by listening to the engine so i dont thing it's a guage problem
I replaced all of the grey fuel lines. I actually chopped open all of the fuel lines and I could not find any sign of degredation. Removed the carbs and cleaned the filters. No gunk in them and the filters washed out easily. Fuel switch was also clean. Removed inspected and cleaned RAVE valves. Replaced plugs with properly gapped plugs. Put it in the water yesterday and still performs the same.
So my question is? Is it normal for the engine RPM to drop back a little bit after that initial surge or should it stay at that higher RPM?
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