Power Valve Symptoms ?????

[catmando]

Read lots of stuff but just makes it more confusing lol, What are the symptoms of power valves not working properly?
Low RPM to MidRange overfueling?
Knock Sensor ( timing issue) ?
Rev Limiter ( Limp Mode ). ?
Are any of these possible issues? And what else would a guy look for?

 

[Dawizman]

When mine was acting up it felt like it hit the rev limiter around 6500-7000

 

[catmando]

That is definatly one of my issues, Early Rev Limiter, Around 7000 rpm. Also knock sensor,definatly not a octane issue. Heard power valves Fawk up timing which would set off knock sensor. Just never diagnosed Power Valves before. Think I’m on the right track!

 

[Dawizman]

In my case one of the nuts came off on the connector plate, and only one valve was opening.

Don't think it's all that common, but worth a look... If you're working on an etec

 

[catmando]

I am , thx for your input , appreciate it.

 

[RGM]

Should throw a code if not working. The ECM is always monitoring the position.

 

[Dawizman]

Should throw a code if not working. The ECM is always monitoring the position.

In my case there were no codes. The actuator was still working, just one valve was no longer physically connected and therefore always staying closed.

 

[Stevemtb]

Pretty easy to pop the cover off to inspect and give the connecting bar a wiggle to see if anything seems loose or wrong.

 

[catmando]

It’s already apart, replacing rubbers ( bevels) or whatever there call lol Cleaning them all up and hopefully problem solved

 

[06 Dragon]

What year and machine?

 

[catmando]

2015 800 summit. All cleaned up

 

[TylerG]

2015 800 summit. All cleaned up

Did ya test it?

 

[catmando]

Of course not, I’m just going to assume I’m ready for next year!