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Surging at low speed 1200 sportster

I had the 2 into 2 big radius put on from new and have also put a screaming eagle air cleaner and race tuner put onto it, but it still surging and especially at low speed, how can i fix this???

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  • unique_lady0
    unique_lady0 Feb 16, 2012

    when i have tuned this bike, twice now its ok for 1 day then goes back to the surging with any speed under the 100 kilometers, no matter what gear it is in, it also had a flat spot around the 110k's going up a hill as well, this is an 2012 sportster and has now done 5000, k's

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5 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

ollie reece
  • 1167 Answers

SOURCE: where is the oil drain plug/bolt on a 2002 harley

Lay underneath the bike on the left side, and look towards the front of the bike, there will be a tube that runs from the back left side of the motor, to the right straight into the side of the frame with a hoseclamp on the end of it. to make sure you have the right rubber line, IT IS THE ONLY LINE WITH A HOSECLAMP ON THE ENTIRE BIKE. loosen the hoseclamp, and then pull the line off the frame (There is a stud welded on the frame, and this hose slides over it, and then the hoseclamp seals it off) This is your drain tube. Make sure the motor is warmed up *(of course) BEFORE you change the oil, let it drain until it's empty. MAKE SURE YOU STAND THE BIKE STRAIGHT UP, OFF THE KICKSTAND FOR ABOUT 15 SECONDS TO MAKE SURE IT ALL DRAINS OUT. Then put it back on the stud, and tighten the hose clamp. Loosen the filter on the front of the motor (it's a spin on car-type) Then replace it, make sure you put a thin film on the gasket of the NEW filter before replacing. It is normal to get oil on the front of the motor, it is unavoidable. it will hold 3 qts with filter.

Posted on Sep 22, 2009

  • 4088 Answers

SOURCE: as i am driving my 2002 Harley Davidson 1200

Removing any baffles from the exhaust will reduce back pressure somewhat causing the engine to run lean. If you can put them back, see if that will stop the backfiring. If so, a carburetor-ed engine can be jetted one step richer to compensate for the lower back pressure. A fuel injected engine will likely need a trip to your dealer to make the engine run richer. Hope this helps!

Posted on Apr 05, 2010

  • 420 Answers

SOURCE: owners manuel for ; 2003 harley davidsonXL 1200custom/screaming e

If you are looking for an owners manuel the best bet is to buy one at a dealer, there is no screaming eagle package. Harley has never made a CVO Sportster.

Posted on Apr 05, 2010

wd4ity
  • 4565 Answers

SOURCE: I have a 2001 Sportster

To begin with, make sure you're putting too much oil in the tank. But, oil blow out into the breather is common on these bikes. Thanks to the EPA, all vented air from the engine must be cycled or run through the engine to be burned. This is why Harley moved the engine breather vents to top of the heads, to reduce the amount of oil in the air vented from the engine. However, it still builds up in the air cleaner and must be cleaned out occasionally. As the engine gets more and more mileage on it, the rings allow more compression to get by them resultling in more crankcase pressure blowing out more oil mist.

I think Custom Chrome and Kuryaykin, aftermarket accessory suppliers, has a kit to relocate the crankcase vent so that you air cleaner is not filled with oil. You can order the kits through any aftermarket dealer and sometimes even you Harley dealer.

Good Luck
Steve

Posted on Feb 27, 2011

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