08-15-2010, 08:45 AM #1
Not Another RXP W/ Low RPM's........
With all these RXP's having rpm issues I thought I would post up my issue. So since last year my ski is only pushing about 7100-7200. At first I suspected the piggyback harness but it was there. Ran is last year because I didn't want to deal with it. During the winter I pulled the SC and found it was slipping @ 6lbs, sent to Jerry and had the washers changed. When I took it apart I found a few nice small holes in my intake tubing so I changed that as well. Slapped it back together, didn't check Jerry's work because I trust his work , and headed back on the water. So heading out I have about half a mile of no wake then I take off and I see the tach reading up towards 7800 but then a few seconds in it starts to drop again. I decided to pull of the piggy back to see if it makes a difference because the day before I took it to the dealer to have them fix my VTS on buds and I assume it automatically reflashes for the harness when hooked up, is this correct? I am not sure if I noticed a difference in the removal of the harness but it may have bc it was reading around 6900-7000 now. I ran it all day and as the day went so did the RPM's, lower and lower.
This last Friday I pulled out the intercooler, flushed it bc the original owner never had a strainer, it came out pretty clean on the water side, the air side was a bit dirty. Thing is I have noticed some salt in the air side, assuming maybe the intake took on some water. I did a compression test on the IC and everything was fine.
Then I noticed a nice dark spot on the inner hull next to where the J-pipe and exhaust manifold meet. Took it apart and noticed a nice chunk was missing from the exhaust manifold. So now my question, would this leak be enough to drop my RPM's by almost 1000? I have been trying to find my issue for a year now and it's driving me nuts!!!!
Any help would be greatly appreciated....
08-15-2010, 09:23 AM #2
To be sure this is the issue try running it without the seat on & see if the rpm stay up there or drop only slightly..
08-16-2010, 10:42 AM #3
I was going to run it without the seat but some nice T-storms came through yesterday so I didn't have a chance to test it.
Do you have Steve's contact info?
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