Super E rich intermediate problem
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Road Captain
Joined: Nov 2007
Posts: 517
Likes: 6
From: Ottawa, ON
Super E rich intermediate problem
Gentlemen, I have a weird problem with my Super E - it seems that it is running rich, judging by the screw setting.
When it had a stock jet - 29.5, I had to adjust it only 3/4 turns out (regular by-the-ear procedure). I checked the float level, needle properly closing, needle being stuck, and everything seems to be ok.
I also cleaned the enricher (plunger and the well, making sure it's not leaking through there) - nothing helped.
So I've installed the smallest jet - 28. That resulted in the screw being just slightly less (!) than a turn out.
My main jet is 72, and judging by full throttle behavior, it appears to be correct.
What else could be wrong?
When it had a stock jet - 29.5, I had to adjust it only 3/4 turns out (regular by-the-ear procedure). I checked the float level, needle properly closing, needle being stuck, and everything seems to be ok.
I also cleaned the enricher (plunger and the well, making sure it's not leaking through there) - nothing helped.
So I've installed the smallest jet - 28. That resulted in the screw being just slightly less (!) than a turn out.
My main jet is 72, and judging by full throttle behavior, it appears to be correct.
What else could be wrong?
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
That would be right, out is richer and a smaller jet would require the screw to be turned out more to get the right air/fuel ratio to idle properly.
Full instructions here http://www.nightrider.com/biketech/d.../super_e_g.pdf
Full instructions here http://www.nightrider.com/biketech/d.../super_e_g.pdf
Road Master
Joined: May 2009
Posts: 1,232
Likes: 8
From: Powder Springs, GA
If you are about a turn out and running a 28 on a stock bike then I would say you are good. I had an S&S on my last stock evo and that was about where I ended up. S&S calls for 1-13/4 turns (or something like that). Also get a good plug reading as well.
Oh and everyone is right about the S&S instructions they are very detailed and good.
Oh and everyone is right about the S&S instructions they are very detailed and good.
Tourer
Joined: Jan 2011
Posts: 350
Likes: 0
From: Reidsville, NC
The way I checked my S&S on my Ironhead, I put a pack of plugs in my tool bag and a plug socket. Run it down the road at low throttle and shut it off. (don't slow down and stop, shut it off while traveling) and pull the plugs. Check them out and adjust the setting, put in new plugs and repeat. You can't get it right at idle and at full throttle you are checking the main. If you idle down and stop before you shut it off you will get a false plug read. Hope this helps. It's time consuming but it worked for me.
Banned
Joined: Sep 2009
Posts: 3,569
Likes: 624
From: deland,florida
check the little blue O ring on the acc. pump nozzle,if its damaged,fuel will come around the sides of the nozzle,VERY common prob on S&S shorty carbs
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Road Captain
Joined: Nov 2007
Posts: 517
Likes: 6
From: Ottawa, ON
Well, I was actually going by S&S instructions, but that's what they say - if it ends up less than 1 1/4 turn, your jet is too big.
Interesting point on the O ring - thanx prodrag! I checked it - it's not really broken, but rather slightly squashed - could that be it?
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Cruiser
Joined: Dec 2010
Posts: 110
Likes: 1
From: central NC
I just assumed you have been looking at the plugs. It is a real good way to tell what the engine needs. Every bike is different and requires different tuning but mine has several mods and I use a 28 intermediate and a 70 main. A 68 main does better for around town or normal cruisin but it leans out a little much on the top end if I run it hard so I run the 70 for a good in between. The 72 made mine a little to rich and it feels a slight bit more slugish with it.
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,202
Likes: 3,089
From: NW AR
I'm running a 265 intermediate and a 64 main. My bike runs great, but my gas mileage isn't all that good. At least at 80 on the interstate, but that's probably why, given the barn door aerodynamics.