stator?

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blueblood68

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Feb 5, 2011
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ontario,canada
ok here goes i have a 98 srx low rpm seems ok when i jump on throttle it hits 8500 then starts to drop to about 7700 to 7900 rpm also center cylinder floods out now if i drop back it seems to clear somewhat also egt tells me center cylinder is flooded now compression is good and carbs are clean. i think the only route left is output on stator but not 100% anyone ever heard or had such a problem?
 
thanks but i already bought one just didn't wanna go through the tear down if that isn't the problem but am thinking i dont have a choice. now also i been having a issue with high beam as well, i hit the high beams and lose all lights and gauges but at times i hit it and they will work but only for a short time but never while sled is in motion.they don't flicker . i went through wiring harness and couldn't find any bad wires. ya gotta love electrical problems
 
try to switch the spark plug wire of place and test it ..they all fire at same time on 98-99 so doesn't matter where u put the wire .. but for the lighting it sounds like a bad stator or a short somewhere ..u can try to unhook the front bulb and try the sled to keep all the energie for the motor
 
the headlight knocking out the guages and such going from low beam to high beam sounds like a classic case of the under the engine harness chaffed, you have to pull the harness out to find the problem.

like modsrx said move the plug wires around see if it moves to a differnt cylinder, it could be the staotr but I have not rn into that symptom, your other description is a classic rub thru problem under the engine.
 
well i will change stator and see if that does it. i will go over harness at the same time. thanks for your input everyone and i will let you know what i find.
 
Well i changed stator and found yellow wire under the motor was damaged. Lights all work now and i have yet to get it out for a decent ride to test performance but i can tell ya the egt's are much closer than before so im hoping its fixed.
 
Okay changed stator, found harness issue and fixed wires so although the stator change did certainly help I still have top end problem. Runs awesome at bottom pulls hard then at the 7700 + zone it has that shudder that you would experience like when sled was cold . I'm at dead end here carbs are clean, good compression, ...? This problem started at end of last season I had 1 cylinder that would flood so I figured carb issue. I replaced carbs this season changed stator, repaired rub through on harness and still having the issue. Confusing. Cause runs so well at bottom end and pulls really hard. So what do ya think is motor maybe done or could this be maybe cdi?
 
I have another motor but don't wanna waste time changing over if this problem is electrical. I'm stumped. Even with sled on a block so it's not under load runs the same
 
blueblood68 said:
I have another motor but don't wanna waste time changing over if this problem is electrical. I'm stumped. Even with sled on a block so it's not under load runs the same
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A motor swap seems excessive, you've changed a lot of parts already - some of which may have created a similar issue. You replaced the carbs and also cleaned them? How thorough did you clean (tophat filters)? Did you pull the harness, check each wire, repair and protect?

Don't mean to sound scepticle but your first post said you checked the harness but you later found an issue. Have you searched "rub-thru".

Powervalves or valve (center) been checked, cleaned, adjusted?
 
Did you try moving the cap/plug wire to a different cylinder? As mentioned before 98-99 all 3 fire at the same time, if flooding cylinder moves when plug wire is moved then its an electrically problem (cap,wire,coil) if it stays in the same cylinder then its an issue with that cylinder (carb,reed,comp? or even could be a powervalve) Being as its happening just below 8K RPM I would be checking into them PV anyways.
 
Valves checked,yellow wire was pinched in harness,carbs done needle and seat all replaced.actually carbs were on the other motor which is in other sled and it works great so carbs are also ruled out. See last season right. At the end of the year I had all the valves checked and replaced a cable ,had suspension gone over and replaced bushings and whatever else needed replacing. Then when I finally got to take it out for last ride this issue appeared. Now after carbs replaced,stator changed harness gone over again I still can't find problem. I changed plug wires around and no difference so unless cdi could of gone south I would think maybe it's a internal issue.
 
I don't know if this will help you but... just finishing up a '99 SRX that has been VERY neglected. With plugs lying on head, pulled motor over, pto perfect, center and mag cylinder would SLOWLY loose spark until they would not fire?!? All 3 coils are supplied power through the same source and daisy chained together. I'll try to keep this short, (1) rusted flywheel - cleaned up but was so bad it's pitted, (2) clean pick up coil, (3) chased harness thoroughly for rub through's etc, (4) removed coil pack cleaned everything in varsol, (5) check caps for resistance values. Put everything back together, plugs sitting on heads, pull motor over. BIG FAT BLUE SPARK on all three, then... same thing, slowly loose spark on mid/mag cylinders. WTF, then I saw something, small blue arc on the middle of the coolant rail all by itself. Got my son to come out and pull the motor over so I could see the other side of the motor and sure enough, wires were arcing all over the place. If you can, try a different coil pack, they may be breaking down? Sure had me chasing my tail...
 
I will check that tonight in the dark,also I replaced stator and cleaned the flywheel no rust but also gonna try another cdi aswell. I have another motor with 19000 less km's on it so if all else fails I'll change the motor and if need be the wiring harness too. I'm so tired of messing around with this so if these things don't fix it its motor time. Will post results
 
I'm having the same sort of issue with my 01 700 srx......it bogs out once the sled is warmed up and run for 5 minutes then gets continuelly worse until it barely runs at all and will actually stall! My question is would it not back fire if the spark was erratic? When you back out of the throttle and pin it again it pulls hard until it starts to bog again but never back fired? I did carbs, valves fuel filter and pump!?????
 
well problem solved. One thing i never checked when i replaced carbs off donor was jetting. Donor sled had a bunch of aftermarket stuff added but i never thought that jetting would have been changed but it was so problem solved. Of course before checking this i replaced the clutch which in the end turned out to be a good idea cause it actually performs much better. Not sure what combination of weight and stuff is in it but it works. So all is well and back on the trail; Thanks to everyone for their input much appreciated.
 
blueblood68 said:
well problem solved. One thing i never checked when i replaced carbs off donor was jetting. Donor sled had a bunch of aftermarket stuff added but i never thought that jetting would have been changed but it was so problem solved. Of course before checking this i replaced the clutch which in the end turned out to be a good idea cause it actually performs much better. Not sure what combination of weight and stuff is in it but it works. So all is well and back on the trail; Thanks to everyone for their input much appreciated.
Click to expand...

How far off was the jetting?
 
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