My ski (RXT) keeps overheating in the chop (3'to 4' waves) but my RXP does not overheat in the same waters, has anyone experience this??

No my RXT never has and I ride rough in mid 80 water. And if you know how waves are measured, then that is some rough chop.

Define overheat....do you "hi-temp"warning on your display?Thats common on the RXT and the older SC's

i ride in similar surf/chop... whatever you wanna call that washing machine that beats the hell outta me...... yea it's literally 3-4' chop around here as well... espcially in the inlets to the ocean. sometimes the chop is so bad and tall that i can't even ride without tacking like a sailboat back and forth and takin the chop on sideways.

nonetheless... my RXT has never over heated and it gets unhooked, beting the heck out of, and run in hot weather and ridden for 3-4 hopurs straight with no problems..... @ 29 hours on it now with no issues

Engine overheats "E Temp" is displayed and motor drops speed to about
17mph, this only happens after jumping about three consecutive waves, if I avoid the jumping
motor does not overheat. Engine temp last about six seconds and then full power resumes.

This message has been edited. Last edited by: Good2Go32,

I thought the "E Temp" display for the external temperature??

so what is the remedy for the check engine/high temp fault?

I put colder plugs(one heat range) in my ski and it hasen't happened since,but i also have a riva power filter as well.

Your jumping is sloshing or blowing out the water in the waterbox ( muffler). During this time, hot exhaust from the manifold is heating up the liquid temperature sensor located on the exhaust IN pipe on the waterbox .... alarming and giving you an indication.

Until your waterbox fills with water again, the engine saves itself by cutting the power. Continued jumping in this manner increases the percentage of detonation to the waterbox muffler.

Do you have a flush kit on ski,if so,you leave that little connector nossle on when riding? someone told me doing so may set off the hi temp warning as well...not sure though...

quote:

Originally posted by Batman03SC:
Do you have a flush kit on ski,if so,you leave that little connector nossle on when riding? someone told me doing so may set off the hi temp warning as well...not sure though...

No flush kit on ski, I'm leaning towards what FLRXP is saying, I will go to the water this weekend to try out, maybe I'm holding on to the throtle too long while jumping.

'04 RXP
'05 RXT w/Tilt Steering

I have not heard of this one but I do think its exhaust overheat.

Wow, you must be giving it a hiding in the rough.

Verify that the exhaust side is not blocked or restricted by kinked hose or debris.

If everything is ok and its a problem due to your extreme usage, you may be able to fix this with installing a water restrictor from a different model. (the restrictor lives between the pump housing and "transom plate", on top left side, you can see the colour coded tab sticking out)

I cannot remember wich size goes in what, but they are all different between di, na, 185sc and 215sc. I would try the next size up if all else fails.

I would still thoroughly go through the salt water side of the cooling system first as the only heat alarm I have ever seen on healthy 4tecs is the engine heat alarm will come on if you wring their necks for a while (say, bouy course testing) then come straight back to idle.

This is from low waterpump rpm not being sufficient to move enough water through the heat sunk cyl. head. Not a drama though, just bring thr throttle up a tad until buzzer goes off.

I had a similar problem, removed the exhaust pipe. Blew air through the cooling passages of the pipe, reinstalled and no more alarm.