Question about 2003 Harley Davidson XLH 883 Sportster

1 Answer

Carb is popping and running lean - 2003 Harley Davidson XLH 883 Sportster

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 4,565 Answers

Usually, if you go up one size on the slow jet and readjust the idle mixture this solves the problem. I think you bike came equipped with a #42 slow jet. Go up to a #45, the next step richer. If you have not drilled and removed the "anti-tamper plug" that covers the idle mixture adjusting screw, do so. Be careful not to damage the screw as they are not available seperately from Harley. This will enrichen the low speed mixture just a bit.

You can also remove the needle from the slide and install a 3 mm flat washer that is about 0.020" thick on the needle to raise it up just a bit to enrichen the midrange just a bit.

Also, check your accelerator pump for proper operation.

Good Luck
Steve

Posted on Jul 04, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

600 carb. Why is it idling poorly and popping?


Sounds like it is running far too rich. Verify proper spark, verify that the float bowl is not overflowing (replace the float and/or the needle & seat if necessary), and adjust the idle mixture screw clockwise to make the idle mixture more lean. (Many tutorials on carburetor adjustment on Youtube.)

May 23, 2015 | Honda Motorcycles

1 Answer

My atomik trooper kids atv was idoling fine and took off fine but when you let off throttle it crackles and pops then it just died I choked it down and it crunk what do I need to do


Popping when you let off the throttle is a sign of running lean. Could be caused from leak in intake boot, air/fuel screw on carb adjusted incorrectly, wrong pilot jet, dirty carb. When I say lean I mean lean as in too much air or not enough fuel on the low rpm side.

Feb 15, 2014 | Motorcycles

1 Answer

2004 flhycui harley pops when shifting and pops when down shifting


The idle might be a little lean.
If it's a carb (your model year offered both carb OR fuel injection), richen up the idle mixture screw a touch and see if that helps.

If not, check for an air leak at intake manifold, both where the carb attaches to manifold, and where manifold attaches to cylinder head.
An air leak will lean out the mixture.

Jan 12, 2014 | 2005 Harley Davidson FLHRS - FLHRSI Road...

1 Answer

2004 650 twin popping up threw carb back cylinder exhaust pipe getting red hot


Sounds like a very lean running cylender (not enough fuel)

Carb may be clogged, filter, bad valve, massive vacuume leak.

Oct 05, 2013 | ATVs

1 Answer

Motor pop when down shift


Generally popping on deceleration is caused by a lean condition, or a air leak in exhaust manifold or intake manifold or corn boots. Check for intake vacuum leak around the carb flanges and any intake gaskets with a quick shot of carb cleaner while running. A leak will change the engine rpm. Listn carefully for exhaust manifold leaks and 11_12_2013_4_27_36_am.png

Aug 28, 2013 | Motorcycles

1 Answer

17.5 hp briggs stratton acts like stuck value


It may as simple as bad fuel [Ethanol ] plugging the pilot circuit in the carb. the pop back may just be from it going lean as it runs out of fuel.

Apr 24, 2012 | Craftsman Garden

1 Answer

Nikki carb runs real lean engine runs rough pops and backfire wont idle put a carb kit still sounds awful


Try turning the mixture screw up a little or if nothing else ive heard of the plug that goes into the carb nees to have the long needle trimmed to the height of the shorter needle in the plug

Jul 18, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

2 Answers

My 1400 intruder pops and back fires


I think maddogcycle is right. One cylinder is running rich and the other running lean. It seems as though they have not been balanced properly and the mixture not accurately adjusted. The settings on these carburettors are critical and must be adjusted with the proper gauges. I'd advise you to have the carbs cleaned and adjusted and tuned to the engine for balance of inducted air flow and fuel/air ratio (mixture)

Apr 09, 2010 | 1996 Suzuki VS 1400 Intruder

1 Answer

My 2003 CRF450R runs lean at 1/3 throttle popping and lossing power, all else ok. Stock jetting and exhaust. Timing, valves, carb ports all checked and good. Could the throttle plate and it's gasket...


hi mate on carb there will be a mixture screw this screw is too far in so it runs lean unscrew 1/4 of turns and try this the picture below will demonstrate bud ok2d8e499.jpg

Aug 29, 2009 | 2003 Honda CRF 450 R

1 Answer

Lean pop or only runs on back cylinder and front back fires


Exhaust 'pops' is generally caused by unburnt fuel igniting in the exhaust, air leaks can cause this too.
When you do any carb work its always best practice to check the carb balance and idle mixture settings.
What colour is the spark plug? http://www.dansmc.com/Spark_Plugs/Spark_Plugs_catalog.html

Jun 18, 2009 | 2005 Yamaha V Star Silverado

Not finding what you are looking for?
2003 Harley Davidson XLH 883 Sportster Logo

370 people viewed this question

Ask a Question

Usually answered in minutes!

Top Harley Davidson Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4514 Answers

Gills Lango

Level 2 Expert

195 Answers

Mike

Level 3 Expert

4336 Answers

Are you a Harley Davidson Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...