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 Post subject: eiger stumbling at speed
PostPosted: Wed May 04, 2011 10:37 am 
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Joined: Wed Apr 11, 2007 2:23 pm
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Location: baxley, ga.
2003 eiger 4wd cranks, idles and runs good at low to mid throttle, but sputters, backfires and wont run over about 25 -30 mph (according to speedo). I figure a clogged jet but havent gone into it yet. any ideas would be appreciated. Thanks...


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PostPosted: Wed May 04, 2011 11:46 am 
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Location: Seale Al
Take a look at the boot between the carb and engine. Could it be that during high vacumn demand, ie full throttle, it's sucking air causing it to lean out?


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PostPosted: Wed May 04, 2011 9:15 pm 
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ATVing To The End
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Joined: Fri Nov 21, 2003 4:56 pm
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Location: Ohio
You got it backwards, geezer ole pal. Highest vacuum is at idle, when the throttle piston/plate is closed. The more the throttle is opened, the lower the vacuum.

The trouble sounds like a clogged main jet, an unsecured jet needle (not lifting up out of the main jet), or low float bowl fuel level to me. The main jet and jet needle starts affecting mixture at about 3/16s throttle opening, the main by itself at about 3/8s throttle, and it has near complete control of mixture at just over 3/4s throttle. At 1/2 throttle, the main jet and jet needle are supplying 70-80% of the fuel.

A service manual will be needed to check the proper level.


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PostPosted: Thu May 05, 2011 7:04 am 
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WoodsRuner wrote:
You got it backwards, geezer ole pal. Highest vacuum is at idle, when the throttle piston/plate is closed. The more the throttle is opened, the lower the vacuum.


I ain't never been accussed of being the sharpest pencil in the box, but I do tell good stories. 8-)

Thanks for bailing me out. :huh:


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PostPosted: Fri May 06, 2011 11:51 am 
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Location: baxley, ga.
Thanks for the responses. I will post results when I get back to it. Thanks again.


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PostPosted: Mon Aug 29, 2011 9:42 am 
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Joined: Wed Apr 11, 2007 2:23 pm
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Location: baxley, ga.
can anyone post a picture from a service manual showing the correct float height? Or give a description of the measurement? THANKS.


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PostPosted: Mon Aug 29, 2011 10:15 am 
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ATVing To The End
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Location: Ohio
Can't help you with that one, but I bet if you called your local Suzuki dealer, the service manager could. If they are not a money grubbing dealer, of course. :wink:


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