Sticky STVA - To keep or not to keep?
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- Benefactor
- Posts: 4898
- Joined: Fri Aug 24, 2012 9:14 pm
- Current Ride: Daelim S250 Advance
- Location: orpington kent
Re: Sticky STVA - To keep or not to keep?
ke sure you get the correct throttle body or even the part to change as this listing shows part no`s http://www.partsoutlaw.com/oemparts/a/s ... ottle-body" onclick="window.open(this.href);return false;
I cant seem to remember.. I don't know where I'm going, but I'm on my way.
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- Posts: 314
- Joined: Thu May 16, 2013 7:19 am
- Current Ride: Vespa SS180 - Kawasaki 1400GTR
- Location: Cornwall UK
Re: Sticky STVA - To keep or not to keep?
Before spending any money, just remove the wiring connection and make sure the wiring is not damaged or rubbed around the connection.
Raven
Raven
- Turisu
- Posts: 109
- Joined: Fri Mar 11, 2011 10:00 am
- Current Ride: Suzuki Burgman AN400 K8
- Location: Devon
Re: Sticky STVA - To keep or not to keep?
Things took a turn for the worst yesterday evening. Presumably the valve got stuck completely and the bike wouldn't go above 4000rpm. I had to reverse back down a steep hill because I didn't have the power to get up it
! After limping home, I tried starting it again and it was good as gold - no warning light, nothing - for about 4 or 5 short rides. Anyway I can't afford a repeat of this heavy power loss and certainly can't have the bike stuck like that for any length of time so I've started looking at options to keep it running reliably in the meantime while I try to sort out the best route to repair. I came across this advice on the burgmanusa forums:
Thanks guys.

This sounds easy enough and would be a good temporary fix. I know where to find the airbox and throttle body but beyond that, is there any advice I should heed before attempting this or any more details that would make it easier for someone with (as I'm sure you can tell) limited mechanical knowledge.Disable the STVA. Easiest way is to remove the intake boot (rubber elbow that connects airbox to throttle body), reach in and open valve all the way, and then disconnect the STVA (White plug). This will keep the valve open. Downside with this is that it keeps the FI Light on, and I believe slightly harms performance and mileage, but I've been running that way for years and been fine.
Thanks guys.

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- Posts: 33
- Joined: Sat Apr 11, 2009 9:52 am
- Current Ride: burgman 650-2013
- Location: West Yorkshire
Re: Sticky STVA - To keep or not to keep?
I had a an Burgman 400 with that prob., after a really wet winter and being left covered by snow for a week or so out side, the FI light came on and after riding for a few minutes it went into limp home mode ie. the revs were limited to about 4000.I took it to a local dealer who did diagnostics on it. After the mechanic said STVA poss. and shook his head I decided to get rid of it. After he had checked it, the light never came on again even after 2 months or so of riding the bike while having done the deal waiting for the new Reg. Coincident or not the weather had hit a hot spot and I reckon the bike dried out properly.
Dave
Dave