sx viper power valve action

SX Bob

SX Bob

New member
Joined
Mar 3, 2008
Messages
17
Age
77
Location
Dalton, Massachusetts
Hi folks! I'm new to this list so bare with me. I've been looking at the past threads but can't seem to find what I'm looking for. I have a 2003 SXViper 700. When I used to turn it on, I would hear the power valves cycle one time, then I started it. Now when I turn on the key you can hear just keep cycling like mad. What could be causing this, and how would I fix it. TIA for any help you guys can offer. I think I finally joined the right forum!!

SX Bob in Massachusetts
 
yup your at the right place,your home...lol

take your servo cover off and turn the key on(motor off) and tell us
whats it doing...is it a ER(electric start,reverse) viper??


:wel: to TY
 
you have a stuck valve or they are out of adjustment. Most likely stuck one. When the servo strokes at start up, if it senses too much load, like a valve that isn't moving, it will cycle a few times and relax. Does your sled feel down on power? Take the cover off and push on the cables to see if one is stuck.
 
Thanks for the responses! When I get home tonight I'll take a look at things more closely. I know Friday afternoon it certainly was not bogging down. It easily jumped right up to 80-90 MPH. Sunday I had to do a lot of slow riding (about 50 miles on my feet 'cause it was too bumpy to sit). If I have to take a powervalve out, how big a project is it? Shouldn't I be able to take the cover off the servo motor and the power valves and see them cycling? Thanks again for the help.
 
SX Bob said:
Shouldn't I be able to take the cover off the servo motor and the power valves and see them cycling? Thanks again for the help.
Click to expand...
yes thats what i'm talking about,,is it a ER sled???????????????????
 
relax :bash: I just thought that is was fairly obvious. I thought maybe it was time for someone else BESIDES you to make a post...LOL dont take it to heart
 
Next time put a "lol" after your post then,,tired of the crap!!!!!!!,, this
forum is to help people,if i posted looking for help i wouldn't care who posted and how often..
 
It's raining like a banshee tonight, so I guess it will have to wait 'til clearer weather to climb under the hood. I'm really anxious to figure this out. I'm headed for the tech pages now to see whats involved with getting the PVs out if it comes to that. I'll keep you all posted. You guys have really made me feel welcome. I appreciate the help.
 
Well, I grabbed the writeup about cleaning the PVs off of the tech pages...sounded good. I took off the servo motor. I then took off the valve housing (1) as stated in the article. I unbolted two of them before I lost the feeling in my fingers. Both of the valves are firmly fixed in a position flush with the base the housing bolts to. I guess I found the problem, huh? Now my problem is how do I free them up to remove them. Can I put som PB Blast on them to soften up this gook or some carb cleaner or something? I really dont want to grab these with vice grips and mar the surface. How about a hot air blower (very hot!) to maybe soften the gook? I'm welcome to suggestions. I left everything together and seperated it from the manifold as it said in the article. There isn't anything else holdng the valve in is there? TIA for advice.
 
If the sled is is out in the cold yea you may want to heat up that area
good,you can gently,,,use pliers to wiggle them out,just don't mark
em up,i use a smooth jaw channel loc..
 
I use carb cleaner or deep creep seafoam to get them out when stuck. and then I put a tiny little screwdriver thought the end of the valve and slowly rock it back and forth till it is out. hope the battle goes well, keep us updated :)
 
I followed the online tech article's instructions, so I seperated the PV housing at the gasket (4 allen head screws), so the only thing I can grab onto is the part of the PV shaft that is exposed between the housing and where it bolts on.
I think I'll dribble a little PB Blaster penetrant in the side grooves and put my hot air gun on them for a while. I still can't beleive they are so solidly seized up. I would expect that to happen from extended slow riding. Other than Sunday's ride, my time in the saddle has been pretty spirited. I've got a brand new jug of oil that I think I'm gonna stick on the shelf. Gotta get me some of that synthetic stuff!
 
you will be AMAZED when you get them all clean as to how fast the sled will be lol!! are they stuck open? if so you will have a LOT more low end when done. the best thing I have found so far is oven cleaner. once they are out spray them with that stuff and let em sit for a few hours. rinse while scrubbing with a scotch brite pad (the plastic ones!) and repeat if needed. but everyone will have different ways to do it! tke some pics of the mess and show em off lol! good luck!
 
03viperguy said:
the best thing I have found so far is oven cleaner. once they are out spray them with that stuff and let em sit for a few hours. rinse while scrubbing with a scotch brite pad (the plastic ones!) and repeat if needed.
Click to expand...
^^Yup that OR paint stripper works damn good,helps too to have the valve
warm like in an oven or on a stove,not hot just nice and warm.
 
paint stripper, good idea! just dip it in a cup of the stuff or something? how long does that take you? always looking for a faster way to do maint!! lol!
 
Works good,i use a aerosol can get it from Advanced auto(air craft paint remover)if it's really bad you need to do it two times,heating up the valve
some really helps,let it soak..
 
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