Thread: RPM's LOW...Need suggestions
09-03-2007, 11:44 AM #1
- Join Date
- Aug 2007
RPM's LOW...Need suggestions
I took out my used 06 215hp RXP yesterday and with:
90% full tank of gas
80 degree weather (no humidity)
69 degree water
water chop about 4-10"
I was only hitting 7600 rpm tops, with a majority of the rpms around 7550-7580.
It didn't matter if it was trimmed all the way up or all the way down or half way in between.
Checked the oil level, looked good. Check the throttle cable, and no unnecessary slack. Checked the intake grate and no noticeable difference between the grate and ride plate. Pump ring and prop were replaced by dealer before I purchased. If I check cylinder compression, what should a 15 hour ski be at? Any way to check supercharger for any issues?
I have a 2 week warranty on this ski, that ends on the 15th, so I'm trying to diagnois the problem and then give it to them to fix. Last resort, I'll just give it to them...but I'm afraid they'll try to just let the 2 weeks expire w/o doing anything productive to fix it.
09-03-2007, 12:22 PM #2
Most likely a super charger problem. Take it back have them check the slip moment on the sc. I hope the ceramic washers havnt failed and gone through the motor.
09-03-2007, 02:26 PM #3
seems like they didnt fail yet but they are slipping excessively.....get those metals in asap
09-03-2007, 02:28 PM #4
ceramic washers, change em out for metal immediatly
hopefully there not all through your engine yet
09-04-2007, 02:55 PM #5
- Join Date
- Aug 2007
Here is the dealer's comments. Help me out with these suggestions please.
He commented that I checked everything he would have, with the exception of the clutch slippage on the supercharger. I told him that I purchased the metal washers, but am waiting on them to ship to me. He recommended waiting until I get those and have them install them to see if I can get my rpms up to the correct figure.
He said that if I wanted to check the slippage that it was quite easy. Pull the large tube on the back middle of the supercharger and attach a torque wrench to it. Turn it one full revolution to break the clutch free and then set the torque wrech to 44-89 inch lbs and see if it moves with less force.
Is this correct and will it help to determine if this is where my lost rpms are at?
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