2001 SRX powervalve problem....no power....

T

TeamCrazyYamahaSRX700

New member
Joined
Feb 6, 2011
Messages
3
Age
35
Location
Ontario
Good day boys...first i would like to say this is my first post and my first real problem with my srx in the 5 yrs i ve owned it. love the sled works great handles good and looks badass sitting still...the problem im having is lack of power....i have just done a fresh carb clean and syncronization, cleaned the powervalves.. all looks good no pull through.....cables have been adjusted. this weekend past i spent going over the whole electrical harness from ecm to guages. pulled the whole thing out on the bench checked over all the problem spots and then some....re taped and lumed the whole harness..cleaned and dielctric greased every connection so im at the point of ruling out rub through. when you run the sled it starts 3rd pull every time hot or cold idles perfect nice and smooth.... clutch engages about 3800-4000 i can only get to about 6500-7000 on good hardpack trails then it loses all power at about 60-80 km/hr tops .....now i powered up the servo motor it seems to operate ok...but i have no diagrams to check and see if the ecm is sending a signal to the servo to open the valves....im stuck...lol... anybody with an idea would be a great help......does anyone have a copy of a factory repair manual with wiring diagrams????? any help would be greatly appreciated....thanks devon happy ridin boys live up that fresh snow :letitsnow
 

dis connect the servo and open the valves then giver tit's see if it reves up!! you'll know were to start!! my sled even with valves closed it will still pull 75-7700rpms depends on clutching!!
 
take the cover off and run the sled on a stand. Valves start opening at 6500 ish and are fully open I think at 7200 rpm. It's open and closed, no in between. If it jerks back and forth when it tries to open, then the cables are too tight. But 60 to 80 max is not a power valve issue (as needsgas said).
 
thanks for the input boys plugs look good burning nice and even when i say 60-80 k max im not tryinn to push it jus starting to stretch its legs lots of low end power tho until about 6500 when they should open like u say.....and it is on or off no in between stage good to kno will try this tonite thanks boys.....
 
well as the story goes i tried new dealer plug caps, rAN the sled up t0 about 7500 rpm on the stand powervalves seemed to open then close again thinkin fuel pump jus not enough supply at high rpm out of ideas and runnin outa snow to keep testin lol.....gonnna have to pull carbs again and check for proper setup somthin isnt right lol.....any other tips or tricks appreciated still have no top end power and she is gutless in deep snow regardless of rpm.....thanx
 
they don't call him staggs65 for nothin...lol..he can read between the lines Netefrog..where are you at this moment..at post #1234..lmao..

staggs wins a prize..yes I meant TPS...... ;)!
 
You must log in or register to reply here.


Back
Top