Question about Motorcycles
Carbs have nothing to do with spark my friend. try looking at your coil wiring.
Posted on Aug 12, 2017
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Posted on Jan 02, 2017
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
You definitely need to change the oil mixture to at least 40:1, use a good grade of 2 stroke oil. You do NOT need to return the bike. I'd highly recommend using an NGK B7EV spark plug. A hotter plug will stop the premature fouling. I would not recommend you decrease the oil to 50:1 because you are essentially robbing the engine from adequate oiling for the piston, KIPPS valves and the bearings. The hotter plug will make a huge difference but remember if he gets to the point where he is able to ride the bike to it's potential he will need to run the cooler plug, B8EV or B9EV. You can also use a cheaper plug in the same heat range, B7ES or B8ES. Those plugs should cost about $1.25 ea. and are an affordable cost of running the bike. It's not uncommon to replace a spark plug frequently, it's the nature of the 2 stroke engine.
Posted on Dec 08, 2008
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
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
Testimonial: "answered all of my questions"
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 "
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Dec 13, 2016 | Motorcycles
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
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