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Is it rich or lean???

Posted: Fri Oct 29, 2010 7:53 am
by Yoniboi
Accelerate hard in, for example, third gear. Goes good all the way, cut the throttle, wait a second, get back on the gas and nothing happens for a while... then the power comes back on like it was cushioned by rubber.

Don't ask me what I'm running, 'cos no one else has gone there.

Cheers all,
John

Posted: Fri Oct 29, 2010 4:04 pm
by hotcam
Sounds like it's flooding the spark plug with too much fuel ???

Posted: Fri Oct 29, 2010 4:14 pm
by Big Jon
Sounds like a trip to a dyno with an exhaust gas analyzer is in your future.

Posted: Fri Oct 29, 2010 4:18 pm
by spook
Dunno :popcorn ...lol.

I've wanting to get an exhaust analyzer I can swap between bikes at the track etc for setting up tuning real world. Is the wide band commander a stand alone unit?

Posted: Fri Oct 29, 2010 5:35 pm
by hotcam
Spook - take a trip to Jaycar and build one on the cheap:
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EGO (Exhaust Gas Oxygen) Tester

Refer: Electronics Australia February 1994 An EGO sensor monitors your engines exhaust and tells the EFI computer if your engine is running lean, balanced or rich - basically telling the computer if your engine is running in tune. This simple circuit is connected to the EGO sensor, engine block and battery positive and will save you $$$ on tuning by indicating the air/fuel mixture. You can then adjust the EFI computer or tune your carburettor (an EGO can be adapted to carb engines). * Sensor required - available from most automotive stores. * PCB, case, clips and components supplied.
$19.95

http://www.jaycar.com.au/productView.as ... rm=KEYWORD

They have digital display numeric readout ones too, for a little more
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http://www.jaycar.com.au/productResults ... SUBMIT.y=0

Posted: Fri Oct 29, 2010 6:07 pm
by JasonL
Do you think Spook needs his EGO tested??

(sorry, it was just there for the taking!!)

Posted: Fri Oct 29, 2010 6:29 pm
by spook
Hmmm... it's running at about 14.6:1...

Posted: Fri Nov 05, 2010 2:17 pm
by Yoniboi
Cheers Guys,

When I get a weekend free I'll have a look. I was running 150s and it was lean. Went to 160s and now, apparently it's rich..... I could go up a notch on the needle.... but the mid-range is spot on as is and I don't want to bugger it!

John

Posted: Fri Nov 05, 2010 4:31 pm
by Big Jon
Rich on 160's, lean on 150's. Hmmm, lemme see, carry the 4, I'd say try 155-ish? :poke