Thread: rxt exaust p1544
05-04-2009, 02:46 PM #1
- Join Date
- Jul 2008
rxt exaust p1544
rxt moster c5 rd powershot stuffergrate 14/19solas xs pumpwedge resi box removed 8180/8200revs my problem is as soon as i pull the trigger the disco lights start flashing its ok in lake flat conditions in 3inch chop it starts driving me mad i ride on the sea all the time i have sent prop off to have 3mm taken off to set it back to reduce revs as you doods sugested hope u can help with this one
05-04-2009, 07:41 PM #2
- Join Date
- Jul 2006
05-04-2009, 08:00 PM #3
Check your j-pipe pissers for clogs and make sure your hose clamps on your coupler between the j-pipe and water box are not causing the coupler to block the pissers.
05-04-2009, 09:29 PM #4
I usually ride the sometimes rough waters of Lake Michigan and
My exhaust temp warning buzzer also goes off as well after a one minute or so full throttle blast, Buzzer shuts off after idling for about 15-20 seconds.
My 2007 RXT has the following Mods:
ROTAX RACING EXTERNAL Intercooler
ROTAX RACING HIGH BOOST Supercharger Wheel
ROTAX RACING 158* T'stat
Riva Metal Washers
Friebe 4" Air Intake up front with Filter
Riva 14/19 R prop with Stainless wear ring
Rive Intake Grate
2* Pump Wedge
Exhaust by-pass tube (Stock hull exit)
Stock E.C.U. and Stock Injectors.
No. G.P.S. yet, use to run 8100-8200 R.P.M. and "run" away from my bud's Stage 1 RXP
I've tried the suggestions listed above, intercooler and strainer was not clogged, 3 pisser holes in J-pipe not covered by clamp in wrong position, I even installed the pump restrictor with larger orfice (identified with yellow O-ring) from a RXT-X with larger orfice, still have the exhaust temp beeper going off.
Another rider suggested drilling 3 additional pisser holes in the J-pipe (for a total of Six) and enlarging the orfice in the restrictor from the Stock 7mm to 9mm.
Open for suggestions.
05-05-2009, 07:27 AM #5
- Join Date
- Jul 2006
05-05-2009, 08:49 AM #6
P-1544 hot exhaust warning buzzer coming on to the point where I purchased another sensor and strapped it to the outside (yeah I know not the best idea) . I checked my intercooler, strainer, even the 3 pisser holes in the J-pipe, went as far as to install the YELLOW-O-ringed larger restrictor washer from an RXT-X, buzzer still comes on once and a while, especially after 1 minute or so full throttle, then goes off after idling for about 15 seconds. I ride the usually rough waters of Lake Michigan, however if the water is DEAD CALM it usually won't go off.
Since the ROTAX RACING intercooler has 5/8" fittings on it, I ran 5/8" heater hose from the outlet side of the intercooler to the front of the exhaust manifold. The stock hose was 3/4" , hokey plastic step fittings were included with the external intercooler, didn't trust them so I replaced the stock 3/4" hose with the smaller 5/8" hose (to eliminate the need for the plastic step fittings) and replaced the 3/4" stock fitting in the front of the exhaust manifold with the smaller 5/8".
Open to suggestions????
05-05-2009, 09:05 AM #7
05-05-2009, 09:14 AM #8
I can rememeber back in the day with my 750 stand up it would start steaming out the exhaust pisser if I held it wot through the chop for any period of time. I always thought it was from it getting a mix of air and water pumped through the system from coming un-hooked.
Sea doo rxt, What year is your boat? I'm betting you are still on the limiter especialy when coming un-hooked and that is causing your alarm. Being on the limiter banging through the chop will cause your boat to run lean and cause high EGTs. I think you still need more prop.
05-05-2009, 09:19 AM #9
05-05-2009, 10:44 AM #10
With the RR intercooler, you need to either change out
the water restrictor in the pump to the larger one, or drill
out the existing 1 about 1-2 mm.
This will give more flow. The RR i/c is a little restrictive so
it "uses" more water.. By the time the pipe gets it, it's
pretty warm and flow is low, so the pipe overheats.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By MPower in forum 4-Tec PerformanceReplies: 5Last Post: 08-11-2009, 10:04 AM
By hdsilverado in forum Sea Doo Open DiscussionReplies: 3Last Post: 04-06-2008, 09:18 AM
By Shibby1485 in forum 4-Tec PerformanceReplies: 18Last Post: 05-22-2005, 07:22 PM
By jonstephens in forum 4-Tec PerformanceReplies: 7Last Post: 05-17-2005, 05:14 PM
By diceclay in forum Sea Doo Open DiscussionReplies: 4Last Post: 05-02-2005, 02:24 PM