Frozen valve? - Suzuki GSX-R Motorcycle Forums Gixxer.com
 1Likes
  • 1 Post By Just_Nick
 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 01-06-2017, 04:05 AM Thread Starter
Amateur
 
springfall2008's Avatar
 
Join Date: Oct 2015
Location: South West, UK
Motorcycle: 2014 GSXR1000
Posts: 850
Garage
Frozen valve?

It was around -3 degree Celsius yesterday morning but I had to use the bike as the car was in the garage. I took it out of the garage and turn the ignition to on and it came up with the red FI light right away (I hadn't even started it at that point). I tried turning it on and off again but the fault was still there (solid light not blinking). I rode it to work just fine and the fault was there when I rode home (it was around 0 degrees when I left work). When I stopped for fuel and started the bike again the fault was gone, and it's not come back this morning either (it's above zero now).

Just wondering, could it be that valve in the exhaust frozen in place perhaps (is that SET or PAIR I forget)?

Anyhow, I ordered a deal mode switch from eBay thinking if it comes back I can check the fault code at least.

Has anyone else had problems in cold weather?
springfall2008 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 01-06-2017, 07:51 AM
I know things... A lot of things.
 
Join Date: Feb 2015
Motorcycle: GSXR 750 K4
Posts: 2,053
Quote:
Originally Posted by springfall2008 View Post
Just wondering, could it be that valve in the exhaust frozen in place perhaps (is that SET or PAIR I forget)?
It's the SET and it does sound like the most likely suspect (on grounds of being cycled pre-start, so that the fault can be identified and that its position and cable drive attracts muck, which can be frozen solid. Another possibility is the STVA, but that's gear-driven on most systems and therefore presumably less sensitive to frost.)
dpapavas is offline  
post #3 of 5 (permalink) Old 01-06-2017, 10:04 AM Thread Starter
Amateur
 
springfall2008's Avatar
 
Join Date: Oct 2015
Location: South West, UK
Motorcycle: 2014 GSXR1000
Posts: 850
Garage
Re: Frozen valve?

Quote:
Originally Posted by dpapavas View Post
It's the SET and it does sound like the most likely suspect (on grounds of being cycled pre-start, so that the fault can be identified and that its position and cable drive attracts muck, which can be frozen solid. Another possibility is the STVA, but that's gear-driven on most systems and therefore presumably less sensitive to frost.)
Should the mechanism be lubricated, I wondered as the heat of the exhaust is likely to burn it off?
springfall2008 is offline  
 
post #4 of 5 (permalink) Old 01-06-2017, 10:42 AM
I know things... A lot of things.
 
Join Date: Feb 2015
Motorcycle: GSXR 750 K4
Posts: 2,053
I have no direct experience with a SET valve, as my K4 doesn't have one, nor have I had much occasion to investigate it, for the same reason. I would guess that the throttle valve itself, will be mounted on sealed bearings and require cleaning at most, as far as periodic maintenance is concerned.

Any grease, assuming it will survive the heat, would likely serve as glue for carbon particles to accumulate and be baked solid, so I'd avoid it unless suggested by the manual. Keeping the exhaust stream clean by avoiding modifications that affect the AFR, or remapping after any such modifications might also help.

As I said, I'm just guessing; others with more experience will hopefully know more and if not, go with the manual. (The latter should perhaps take precedence, depending on your outlook on things.)
dpapavas is offline  
post #5 of 5 (permalink) Old 01-06-2017, 02:35 PM
Likes Diiiiiiiiiiiiiiicks
 
Just_Nick's Avatar
 
Join Date: Jul 2009
Motorcycle: 2006 GSXR "250"
Posts: 1,918
Garage
Re: Frozen valve?

It's more likely that the cables are binding or the mechanism doesn't like the temperature than it is the valve itself is stuck. You can always try removing the cables and move the valve by hand to note any binding, though.
springfall2008 likes this.
Just_Nick is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Suzuki GSX-R Motorcycle Forums Gixxer.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome