EVO All Evo Model Discussion

plugs almost white

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Old May 3, 2012 | 02:56 PM
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Default plugs almost white

ever since i got my bike, about 14,000 miles ago and 4 years, its always been sluggish from a dead stop. the plugs are leaning towards white but with todays gas i figured that was it. it runs fine, doesnt run hot, the pipes are black and sooty inside. ive tried adjusting the accelerator pump and it helps some. i bought the bike from a guy in arizona and have always figured it was setup right. now wounder if ive been running lean all this time. where do i start, its a S&S Super E.
 
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Old May 3, 2012 | 04:00 PM
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I'm currently running super E on 2 bikes. My plugs are a very light tan and sometimes just off white depending on outside temp. I live near sea level and I'm using a 29.5 intermediate jet, 72 main jet and idle mixture is between 1 1/8- 1 1/4 turns out from lightly seated.
When I lived in Montana I used 28 intermediate and 70 main with the same idle mixture setting.
My engine is pretty much stock tho I have free breathing pipes with baffles.
You could have a timing issue. Or maybe your bike is tall geared so taking off seems under powered. I had a 93 Heritage that was that way. The rear sprocket was a 65 tooth if I remember. Most others at the time had 72 tooth sprockets. I always thought it was under powered since it was new and I lived in Montana at the time.
Hope this helps!
jim
 
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Old May 3, 2012 | 06:27 PM
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i have a cam, which one i dont know. i can do 90 mph in forth if that tells you anything. ill check my timing.
 
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Old May 3, 2012 | 07:12 PM
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Mate yoo might be geared high from 90 in fourth.
 
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Old May 3, 2012 | 07:24 PM
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so being able to hit 90 mph in fourth is a bit high ? like i said i know i have a cam but which one i dont know. if its a high lift that would explain no bottom end.
 
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Old May 3, 2012 | 09:12 PM
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well just went out and started it up. starts right up and is responsive. so its responsive when it cold but when it gets up to temp it hesitates form a stop.
 
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Old May 3, 2012 | 09:27 PM
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just my 2 cents.......
check for a manifold leak. when you crack the throttle, you create high vaccum, and with an intake leak, it sucks more air, leaning out the mixture. would give you a hesitation for sure. beyond that, might just be the jetting. i know mine is much more responsive now after jetting up one size, slow and main.
 
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Old May 5, 2012 | 06:41 PM
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well i finally checked my jetting. 295 on intermediate and 72 on main. no vacuum leaks.
 
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Old May 5, 2012 | 10:15 PM
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Originally Posted by hotrod351
well i finally checked my jetting. 295 on intermediate and 72 on main. no vacuum leaks.
huh?...something not right here
 
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Old May 6, 2012 | 01:13 AM
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Originally Posted by hotrod351
well i finally checked my jetting. 295 on intermediate and 72 on main. no vacuum leaks.
Divide by 2 and reverse? 147 main, 32 pilot?
 
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