How to check powervalve operation? Help!

K

krazyzx9

New member
Joined
Dec 19, 2006
Messages
21
Age
49
Location
MN
I am kicking around the idea of picking up a used 2000 srx. The price is 2000 with 3200 miles on it or so. I was wondering how to check the powervalve operation when I go look at it. I know to look at the w arm in the suspension. I was just wondering how one checks the correct operation of these powervalves. Thanks, Krazy
 

You can take the cover off of the power valve motor and then idle it down real low and the motor will cycle.
Then you can also pull the cables by hand to see if they are moving the valves. If the valves are moving freely the cable will retract by itself.
 
edunn is right for watching is the servo motor is working...but not to see if the valves are funtioning. The only way you can check and see if the valves are working (clean and free) you have to pull the valve housing (or whatever you want to call it) and make sure that the cable ends are still in the valve. You can pull on the cable all you want and it will always retract by itself. It's the cable itself that is spring loaded... the spring pushes both cable and valves back into position when the servo is not engaged so if the cable isn't connected to the valve where can it go?
 
You can't tell if a valve is pulled threw, i just went threw this with my
'01 befor i bought it,, only way is to pull all 3 valves appart and look..
 
Very tuff to tell unless you can ride it and are usta srx very noticble on mine when they went would not pull rpm on top.look for other signs like excessive oil near exhaust,take the cover off also and watch operation,when mine was gone(cable snapped) it was easy to diagnose because there was no pressure on cable at all. Hope this helps
 
change_up said:
edunn is right for watching is the servo motor is working...but not to see if the valves are funtioning. The only way you can check and see if the valves are working (clean and free) you have to pull the valve housing (or whatever you want to call it) and make sure that the cable ends are still in the valve. You can pull on the cable all you want and it will always retract by itself. It's the cable itself that is spring loaded... the spring pushes both cable and valves back into position when the servo is not engaged so if the cable isn't connected to the valve where can it go?
Click to expand...

not true, the springs make there pressure on the cable through the ends being pulled on the valve, no end, no spring return.
 
If you got pulled cables out of your valves,, you WILL still feel sring
pressure pulling(in and out) on the cables in the servo............
 
YES REDSNAKE. You just repeated what I was saying. Maybe i should say it more clearly. If the cable is pulled through the valve, you will always have spring tension as the cable itself, including the cable end, will still be in tact. The spring is located at the end of the cable so if you don't have an end, the spring has nothing to push against. The only way you won't feel spring tension on the cable is if the cable itself is damaged, if the valve is damaged you can't tell without pulling them apart and looking.

We're thinking the same thing, I just left the broken cable out of the deal


No pressure on cable = broken cable
pressure on cable but no exhaust valve function = pulled through valve
 
it's fine. I just read my post and it was a little hard to interperet... Just making sure we're all clear on the same idea, that way there is no confusion for people that don't know.
 
Be sure to take the housings apart fully also.
I had some rpm problems last year, thought it was a cable and it turned out to be a broken spring. I took the valves out three times before I actually disassembled them completely!
DOH-HEAD ME!
lol!

mul
 
cleaning valves

It's been awhile since the powervalves have been cleaned on my '01. What I'm wondering is, if I unscrew them and pull them off to clean them, will I have to have the cables adjusted or synched? I was hoping I could just clean them and screw them back in. I'm assuming when the motor is started again, the servo will pull them back to the right spot. Or am I wrong? The reason I ask is a long time ago, a friend came over and used something to reset them after I had cleaned them. Just wondering if that's necessary and if so, how do you do it?
 
If it's been awhile sense you cleaned them i would just pull them out
clean and re-adjust it's easy to do then you'll know you'll have top performance back.

also do a search on power valves you'll be reading for hours..LOL
 
You must log in or register to reply here.


Back
Top