2004 Yamaha SUV1200 - Cavitation what should i do?
Recently picked up a fairly new (outside) 2004 Yamaha SUV1200 local.
Get it out on the water the first time, with 3 ppl on board, it cavitation really bad which top at 5mph which I quit that day and return on the following day.
The next day only 2 ppl(210lb +140lb) on board, rarely cavitation which the top speed at really smooth bay sea water at 45-50mph GPS speed, the reading on the dash is about 40mph when full throttle. The rpm when at full throttle was about 6800-7000 rpm. And it get on plane pretty fast about 2 sec on plane.
The ski have 125hrs on it, the previouse owner was a old lawyer which he said he never replace the impeller/wear ring and always get it service by the dealer.
Ive heard that SUV sometimes like to have cavitation which I ordered R&D intake grate and pump seal kit to try if any improvement.
I bought a harbor freight tools's compression tester to test the 3 cylinder, 3 of them are the same at 90 psi, which if it possible to be faulty compression tester or it is really that low?
Btw, i calculated that day it consumes 7.8Gal of fuel for 2 hrs and total 25mi traveled, mostly when full speed.
Not sure what I suppose to do next to fix the cavitation besides the intake grate and pump seal, will see how it perform after installing it. I read other site about top speed on a Yamaha SUV, somebody says 50mpg somebody says 60mph, but I dont know how many ppl on board the speed they are talking about.
And I noticed the trim cable was frozen, was that a easy job to fix or need to take to dealer?