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Motorcycle only have spark when bike sets in the sunshine.after setting in the sunshine for awhile it cranks up and starts good the rest of the day.I put new carbs and it does the same thing.

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  • Motorcycles Master
  • 13,078 Answers

Carbs have nothing to do with spark my friend. try looking at your coil wiring.

Posted on Aug 12, 2017

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Mitchy123
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SOURCE: 2003 883 sportster wont start

What u are describing is typical of a faulty ignition system, but could also be a fuel problem. I check by removing the aircleaner and rotating the throttle. If u see a nice spray of fuel, thats probably not the problem. Check for a spark at the plugs. I can explain how if you need me to. If you cant see a good spark, U have an electrical problem. I had a crank position sensor go bad on me. Dont do what I did (replaced the battery, ignition, and regulator as part of my diagnosis procedure)

Posted on Nov 08, 2008

  • 47 Answers

SOURCE: Suzuki GSF400 Bandit problems with tick over.

as you have replaced carbs you will need to retune for fuel intake also check its getting enough air ie.. air filter has been changed or is clogged

Posted on Jun 17, 2009

  • 15 Answers

SOURCE: i have a 72 honda cb350 and the bike wont start.

Pull the plugs making sure you have wet plugs, fuel is getting through to cylinders.
If no fuel, make sure you have flushed each float bowl by unscrewing the float bowl drain and allowing a bit of fuel to run out, this can reduce airlock in the carb. Make sure the floats are loose. A poor mans fix is to tap the carbs with a screwdriver hand to make sure they are loose. If you still are not getting fuel into the cylinder, pull the carbs, check pilot jet for clean, if you have to order new ones. Do not clean with a drill, use carb cleaner in a small jar and leave them overnight and blow out with compressed air.
Insert and check again...

Posted on Aug 18, 2009

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ollie reece
  • 1167 Answers

SOURCE: i have a dt 125 field bike will not kick start

try squirting some fuel on the inlet and see if it firse get back to me with results

Posted on Oct 11, 2009

Testimonial: "will give it a go tried for hour today "

19ken55
  • 426 Answers

SOURCE: Hi , my suzuki Bandit GSF 600 2002 plate, off road

Ride the bike 20 or so miles on open road. Stop and remove plug to inspect. 'Are they black or white ?


Black =rich white=lean

Posted on Feb 01, 2011

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1 Answer

80 XL500S Bike runs few minutes and dies like its out of gas


I,v got one as well 2 things can cause that, petrol or spark,check to see if the float is set right height and needle and seat aren't blocked and only letting a tiny amount of fuel threw you should pull carb apart and give it agood blow out with compressed air and clean the jets I think there are 2 if remembered if its starting,normally its a fuel problem could be tank tap halved booked as well normal on bikes been sitting awhile then after that get anew spark plug sometimes they start breaking down when get hot 9 times out of ten that's your problem any way try that it should work good luck

Nov 17, 2013 | 2005 Honda VT 750 Shadow Aero

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Yamaha 50 dirt bike ele start very weak spark crank more no spark


Hi Blossercj, you could have a faulty spark plug, spark plug cable, or ignition coil, Good luck and have a nice day.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jan 04, 2013 | Yamaha Motorcycles

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Won't crank when hot


check coil, carb adjustment, and relays

Nov 03, 2012 | 2001 Harley Davidson XL 1200 C Sportster...

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2008 Honda CRF 250 R replace the spark plug


Hi, Anonymous if you are going to work on your bike from minor maintenance to major surgery you're going to need tools and information on how to use them. A basic tool kit will set you back a bare minimum of $100 depending on how frugal and clever you can be, other factors like the year-make-model of your bike, your location and the amount of "DRACHMA" you are willing to part with, may drive the price higher. These are the tools you will need, # 1-3 are the mandatory first and best tools you will buy otherwise the rest are useless:
1. Service or repair manual, you would not go to a place of worship without taking your Bible, Quran, Torah, Vedas etc. you would not work on your bike without a having a service or repair manual. You can go online and Google free service manual to download for the year-make-model of your bike or try "manualslib.com" a free website or try "Tradebit.com" most manuals cost $15.
2. Parts manual or microfiche I use "partsfish.com" it has free listings of the top 4 Japanese bikes, including the year-make-model, picture of the part, the part number and the price.
3. Owner's or User manual will have maintenance schedules, troubleshooting, and information not found in the service manual. These are also free if you know where to look.
I recommend you folks that live in the U.S.A. to purchase all tools at you local "Harbor Freight" they have the cheapest prices. For the rest of the world, you can order online from "harborfreight.com" American Motorcycles will use SAE measurements on tools the rest of the world will use Metric.
4. Small toolbox 9"x10"x19" or larger should be fine for a starter.
5. A basic set of combination wrenches.
6. A basic set of screwdrivers.
7. A basic set of 3/8" drive 12 point short sockets with a rachet.
8. A basic set of 1/4" drive short sockets with a rachet.
9. A basic set of Allen wrenches.
10. A basic set of Torx bits.
11. A basic set of pliers including side or wire cutters
12. A spark plug wrench or deep socket.
13. A 24oz. or 680-gram brass hammer.
14. A multimeter.
15. Electrical tape.
16. A 6" pocket steel ruler.
The rest you can purchase as needed.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Honda Spark Plug Wrench eBay
2004 Honda CRF 250r Spark Plug Change Maintenance Video Quick Job
Honda 2004 CRF250R Service Manual
https://www.partsfish.com/page/oem-parts-for-honda
Honda CRF250R Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Apr 21, 2012 | 2008 Honda CRF 250 R

1 Answer

1999 sportster. lose spark while riding. cranks but won't start. let it set for 10 or 15 minutes and it fires up. one time i ride 3 miles, next time i might ride 20 miles. next time i may ride for 2 or 3...


It sounds like you may have a problem with your electronic ignition system or the crank position sensor. Here's a way to find out which it is. Stop by an electronic supply shop like Radio Shack or somewhere like that. Purchase a small can of "Component Cooler" and put it in your saddlebag or tool kit bag. The next time your bike suddenly quits on you, check for spark. If you have none, shoot a bit of the "component cooler" on the electronic ignition box and try to start the bike. Try this two or three times. If that doesn't help, try the same thing with the cam position sensor. If it does no good, then your problem is not temperature related.

Good Luck
Steve

Feb 20, 2011 | 2000 Harley Davidson XL 1200 C Sportster...

1 Answer

Bike started with choke on and then just stopped. Can't get started trying to start but won't fire.


You will need to pull the spark plugs out. Check them good on the gap , wet is a sign of needing
new ones, or weak spark, black all over , replace. If they are white that is good , if they are new
and wet, that is good . If they are new plugs check gap and clean up put them into plug wire and rest end of plug up against head and crank the motor look at your spark if it is good and blue, put
them back in and it will start . If it starts, try to learn a new way to start your bike. You can do this
by before cranking make sure your battery has a full charge, some times good charge will really
make it easy to start, when it is cold outside, always pull your choke all the way out, and start your bike . when it starts quickly move your choke in to about half way, and then let it warm up, before
taking off , when you think it has warmed up within a few min. push choke all the way in, and off
you will go. Good Luck

Nov 07, 2010 | 2006 Honda VTX 1300 S

1 Answer

Wants the bike is warm up and turn off it won't start and back fires,let set for awhile and it will start again,does it everytime.


You didn't say what type of bike you were having a problem with but it sounds like a classic case of "fuel percolation". When the engine is hot and you shut it down, the lack of air flowing by the carb allows the fuel in the float bowl to boil. This floods the engine and it won't start.

Now, to determine exactly what's going on, The next time it does it, have a spare set of spark plugs with you. Pull the spark plug wires off the plugs in the heads and put the spare set in the wires. Ground them good on the engine and press the start button. Watch for the plugs to fire. If you see spark, then you know your problem is fuel related. If not, it's ignition related. Then we can go from there.

Tell me what type of bike we're messing with here?

Aug 03, 2010 | 2000 Harley Davidson XL 1200 C Sportster...

1 Answer

83 xr200r runs for awhile then stops and wont start for awhile


Sounds more like the coil is causing your problems. It overheats and causes the misfire you experience. Coil cannot be repaired. Needs to be replaced. Once the bike has died, take the plug wire off, remove the sparkplug and reinsert the plug into the plug wire. Now let the plug rest on the head. Metal part should be touching the head. Try to start the bike again. The bike wont start of course but you should see a blue spark between the electrodes of the spark plug. If not, swop the plug with another one. If you still dont see a spark it is probably the coil. Other possibilities are the generator and/or condensor.

Jul 25, 2010 | Honda XR 200 Motorcycles

1 Answer

My bike is floaded how can i fix it


let it sit for awhile than try to start it if its still not starting install new spark plugs it should crank up

Apr 18, 2009 | Harley Davidson Harley-davidson...

1 Answer

2003 883 sportster wont start


What u are describing is typical of a faulty ignition system, but could also be a fuel problem. I check by removing the aircleaner and rotating the throttle. If u see a nice spray of fuel, thats probably not the problem. Check for a spark at the plugs. I can explain how if you need me to. If you cant see a good spark, U have an electrical problem. I had a crank position sensor go bad on me. Dont do what I did (replaced the battery, ignition, and regulator as part of my diagnosis procedure)

Nov 08, 2008 | Harley Davidson Harley-Davidson Motorcycle...

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