The kids were riding the waverunner and it ran low on oil and the alarm sounded and the waverunner went down to 6500 rpm and would not go over. Filled the oil and the waverunner still will not ramp up. Looking at it saw that the yvps valves were going fully close. They cycle fine when you turn the waverunner off for the cleaning cycle. Check the servo and it was good. checked oil level sensor and it always read 600 ohms. replaced accord to manual. Know the max reading is 300 ohms functioning normal. Went through the Muti-function meter this morning and let it run its corse and it went through with no problem. Could this problem be with the cdi because the motor is purring like a kitten. Just not opening ypvs valves when ramping.Any sugestions Iam stumped.