Question about Harley Davidson Harley-Davidson Motorcycle Desktop Telephone

2 Answers

Black smoke My Harley has a little bit of Black Smoke come out of the Exhaust just when I start the bike. Can Somebody please tell me what it could possibly be. Thank You

Posted by on

2 Answers

Most harleys will exit black smoke on start up. a cause of this is when you first roll over the engine the cylinder will load with fuel but it will be too lean to fire but on the next roll over when cranking speed is up the mixture will be a little rich and when it lits off will exit the black smoke. also, do not roll the throttle at start up because the accelerator pump will dump a shot of fuel into the manifold. if the air filter was that clogged, you will have problems all over the rpm range and not just at start up. by the way black smoke is unburned fuel and blue smoke is oil. if you see blue/grey smoke it is a sign of low compression, unburned fuel and oil by-passing the control ring, usually disappears when cylinder comes up to temperature. come on pyrhyc, this is basic stuff. if you start blowing blue smoke, check the umbrella valves in the rocker box first, common problem.

Posted on Aug 27, 2008

  • 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.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 2,028 Answers

Change your air filter and clean the blow by tube that crosses the heads and connects to the back side of the air filter. If the tube or the air filter is clogged, then the oil that the blow by removes is going back into the cylinders, causing the black smoke. Also keep in mind that a Harley will blow a little black smoke upon starting as it ages, it's normal.

Posted on Aug 06, 2008

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

White smoke from exhaust after changing fuilds


Is it condensation or actual smoke? White smoke is associated with diesel mixed in petrol and with quite strong smells. I suspect that it is condensation as water vapor is a by product of combustion and the motor/exhaust will have to warm up to clear it. Check for water droplets at the end of the exhaust to confirm condensation. Burning oil will cause a blueish smoke to emit from exhausts.

Apr 02, 2014 | 2007 Harley Davidson FLHX Street Glide

1 Answer

Black smoke and oil from 89 pathfinder


Could be too much oil in the engine or bad valve seals

Nov 25, 2013 | Cars & Trucks

1 Answer

Exhaust smoke


check air fuel mix seems like bike is running rich

Sep 22, 2013 | Honda Motorcycles

1 Answer

White smoke coming out of my yamaha 2008 r6 whenever i start the bike. why is the white smoke coming out ?


Hi, Anonymous your instrument gauges and lights can alert you to most electrical and engine issues they can not warn you about failed engine gaskets or seals so your engine has to resort to old fashion alert methods of colored "SMOKE SIGNALS" here is a breakdown of their meaning:
1. WHITE SMOKE on start-up can is usually caused by a blown head gasket allowing coolant to enter the combustion chamber and may start dripping out of the exhaust pipes or mufflers.
2. BLUE SMOKE on start-up is usually caused by failed valve seals. Smoke that is constant while riding is usually caused by valve to guide and piston ring clearances that have exceeded service wear limits.
3. BLACK SMOKE on start-up is usually caused by too much fuel in the combustion chamber this can be due to air/fuel mixture adjustment too rich, accelerator pump improperly adjusted, faulty choke/enrichner or not in the off position, faulty carburetor float needle and seat, pilot jet too large, fuel injectors leaking, smoke while riding is usually caused by the main jet being too large.
It should be noted that aggressive or abnormal throttle operation will cause these conditions to manifest themselves exponentially.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.r6-forum.com/forums/57-garage-mechanical-help/205697-white-smoke-exhaust.html
White Smoke Coming Out My Exhaust Please Help
2008 2009 Yamaha YZF R6 Service Manual R6 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Apr 28, 2012 | 2008 Yamaha YZF-R6

1 Answer

Describe your 1998 FLHRC-I GAS TANK Problem: Bike


get compression checked on the cylinder for that pipe could be rings worn if compresion is fine valve guides could be worn or damaged hope this helps

Dec 16, 2009 | 2001 Harley Davidson FLHRCI Road King...

1 Answer

Bike is smoking. Was not running for aprox 2+ years. Carburetor fixed and all o-rings replaced. Bike started and and is very heavy on fuel and is smoking. Please help


If it is black smoke you have not cleaned, adjusted the carbs correctly. If white smoke then you have oil entering the combustion chamber and or exhaust.

Nov 15, 2009 | 1993 Triumph Daytona 1200

1 Answer

2000 Volvo V70 2.5 TDI excessive black exhaust smoke


black smoke( too much gas)
blue smoke( burning too much oil)
white smoke( burning coolant)

Apr 20, 2009 | 1998 Volvo V70

Not finding what you are looking for?
Lands Phones Logo

617 people viewed this question

Ask a Question

Usually answered in minutes!

Top Harley Davidson Lands Phones Experts

kakima

Level 3 Expert

101580 Answers

David Payne
David Payne

Level 3 Expert

14160 Answers

WTF Chuck.....
WTF Chuck.....

Level 3 Expert

386 Answers

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

Answer questions

Manuals & User Guides

Loading...