2009 fast idle

I didn`t touch anything...tho I bought the bike like this couple of months ago. At the time I didn`t know it can be a problem..I thought I can just turn the screw and adjust the idle.

[R1ffR4ff]

Try this page.Read down a few posts.

http://www.svrider.com/forum/showthr...=133309&page=2

Dunno if it's the same on your model.

[fizzwheel]

Originally Posted by bs8c

Oh sorry fizzwheel, I thought since it`s sv forum I don`t have to mention it. It`s a SV650, 2009 with 13000 kilometers on it. It has BMC air filter, Sebring Twister exhaust slip on and..that`s it. I checked and calibrated the STP sensor( set it to the right voltage), checked the ICS for resistance and it`s ok. I checked the TPS sensor and set it to "open" at 2.5k rpm(since my bike idles at 2k i thought it might be ok). Checked for vacum leaks(tho I`m not really sure which ones to spray..I did spray on the 2 little ones that come from/to the airbox, as well as the bigger ones attached to the airbox.

Not all of us have SV's you know...

Moved to SV Specific Sub forum...

Thanks for putting the extra info on it really does take the guesswork out of it and makes sure you get the right advice for your bike / problem

Hmm...when you take off the tachometer, remove the needle, and install it again. On the next start it should do a little dance...move to 7k rpm than back to 0, right?

[R1ffR4ff]

Originally Posted by bs8c

Hmm...when you take off the tachometer, remove the needle, and install it again. On the next start it should do a little dance...move to 7k rpm than back to 0, right?

Do you mean the actual needle on the Tachometer?

Yes, the actual needle. I removed it some some time ago to change the orange led lights into white.

[R1ffR4ff]

When I replaced my peeling Tacho decal on my 1999 Curvy I didn't trust the info on the net(I rarely take anything posted as gospel and always do multiple research) I had set the idle with the engine at nominal running temps @ 1300 +/100 RPM.

When I replaced the Tacho needle,even after flicking the throttle several times,it still settled high so I had to remove the needle and move it several times and repeat the throttle flicking until I got it to settle back @1300 Rpm.

I checked a few YT videos against my engine sound just to be sure I had got it right so record your bike@ idle on your phone when the engine is warm and then compare it against a few on YT?

Note:Better slightly high idle than low.Too low an idle can cause undue engine wear by lack of oil pressure.

[daktulos]

Originally Posted by R1ffR4ff

I checked a few YT videos against my engine sound just to be sure I had got it right so record your bike@ idle on your phone when the engine is warm and then compare it against a few on YT?

Has anyone tried a FFT app to measure the engine speed, presumably the dominant frequency would be quite easy to spot.

[R1ffR4ff]

I've looked into this a bit.There's some cheap LED Tachos on eBay,

http://www.ebay.co.uk/itm/Digital-LE...oAAOSwNyFWd9SD

but where could we attach the signal feed?

Red to power.
Black to Neg
Green signal?

Also one that uses spark plug induction,

http://www.ebay.co.uk/itm/LCD-Digita...gAAMXQWzNSeGYa

[daktulos]

I don't know about the pointies, but the naked curvy tacho is dead-simple. It has a +ve a -ve and a signal from the spark plugs, which is one cycle per revolution. I had it set up with a signal generator (10v square wave) and that worked perfectly, so you could calibrate one that way.

The digital tacho you linked to has a 5V sensor which would make it more complex to install.

I bought one of these which works with the existing (curvy anyway) wiring:

http://www.demon-tweeks.co.uk/motorc...stroke-engines

It worked pretty well, but with the dual spark, I'm guessing the tacho has changed significantly, so all bets are off.