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Drazen Markovic Posted on Mar 17, 2019

Supershadow 250 wont fire, cdi carburetor sparkplugs coils were changed, it just crancks but wont fire, it has gas and new battery

  • Drazen Markovic
    Drazen Markovic Mar 31, 2019

    Fixed it, changed sparks again and it works now

×

1 Answer

James Felder Jr.

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  • Contributor 16 Answers
  • Posted on Mar 31, 2019
James Felder Jr.
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Joined: Mar 24, 2016
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Have you check all the fuses

5 Related Answers

Anonymous

  • 5 Answers
  • Posted on Sep 25, 2009

SOURCE: ktm 450sxf 07 wont start

buy a yamaha

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Anonymous

  • 738 Answers
  • Posted on Oct 25, 2010

SOURCE: no spark on honda superdream 250 good battery

I TAKE IT YOU HAVE CHECKED THE CONDITION OF THE PINOUTS FROM THE ALTERNATOR, THE EARLY SUPERDREAM SUFFERED WITH ALTERNATOR PROBLEMS,IE BURNING OUT/ THE CHAIN WOULD ALSO CUT THROUGH THE WIRE FROM THE ALTERNATOR. AND THE WIRE PINS IN THE BLOCK CONECTORS WOULD ALSO CORODE AWAY. MOST LIKELY FAILURE OF ALTERNATOR MOST COMMON, THERE IS A CHECK YOU CAN DO TO ELIMINATE IT, CHECK THE OBVIOUS FIRST

Anonymous

  • 11 Answers
  • Posted on Feb 28, 2011

SOURCE: the van wont start. Changed coil, changed

We had this same problem with the 1992 Dodge Ram D250 pickup truck we own. We wasted a lot of money until my Uncle's mechanic (he owns a small auto shop) fixed the problem. There was some kind of oil pump shaft that needed replaced. Sorry I am not very smart with vehicles, but I do remember that it has something to do with the distributor and oil pump working together. The teeth on this particular part were chewed up so the distributor was not firing correctly. The part was replaced and the truck has started and ran just fine ever since. I wish I could remember what the part is called!!! But I just know it was a part that looked like a pipe kind of; it was straight and had some teeth like things at one end...

Anonymous

  • 1 Answer
  • Posted on Mar 22, 2012

SOURCE: bike wont fire. has no spark

I don't know what motor wires go to which???

Joe Stanton

  • 1154 Answers
  • Posted on Apr 24, 2013

SOURCE: My Rm 250 wont spark

The Voltage From The Stator To The CDI Should Be Around 40 Volts(AC) At Cranking Speed. Be Sure Your Meter Is Set For (AC) Not (DC). The CDI Changes The (AC) Input Voltage To (DC) Output Voltage To The Primary Terminal At The Coil. An Electrical Shock Hazard Exist If Stator Voltage Is Checked With Engine Running. Always Perform This Test At Cranking Speed (R.P.M.) For SAFETY. 120 Volts (AC) Can Be Present With Engine Running.

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Related Questions:

0helpful
2answers

1988 250 4x4 Trail Boss. Why can't it be started?

I am working on the same machine that has not been running for quite awhile. I'll let you know what I learn. Did you find a manual? Gus
Feb 18, 2022 • Polaris ATV
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My 1980 pe 250 is getting fire from magnetio to cdi box but not to coil put new cdi box off a running pe 250 and still no fire to coil

Check the coil. Swap it with another if possible to check. Sometimes coils fail short-circuit on the primary. If so, you will see no signal from the CDI when attached to the coil.
Apr 14, 2015 • Motorcycles
0helpful
1answer

Backfire thru exaust on a 2004 kx 250

remove stator cover and flywheel (puller required), verify crankshaft key is not sheered, and stator plate is in its proper position. There is no timing mark on that flywheel because it is irrelevant and not needed.
This is most likely not a flywheel timing issue but a CDI timing issue. The CDI timing is governed by the TPS switch on the carburetor telling the CDI when to change timing maps and curves. If the carburetor is dirty and you cranked up the idle to run off the main circuit instead of the proper idle circuit this can happen. Or you have an improperly set, or failed TPS switch on the carb.
0helpful
2answers

1977 yz 250 isn't getting fire

Check the points for proper gap and clean. The old school bikes used more than just coil and plugs. Also, often overlooked, check the kill switch connection. Often this is the case on Yamahas.
0helpful
1answer

This is a 1984 1200 that will not start and back fires thru the exhaust and carbs

hello
Back fire is an indication that the bike is firing incorrectly.
Your timing chain is probably stretched, due to the year.
inproper valve timing due to stretched timing chain will make the bike backfire.

I have other thoughts like stuck valves or inproper sparkplug wires on wrong plug,
i always start with easier and less expensive method.
1st check your sparkplug wires to make sure they are on the right plug.
2nd pull sparkplugs and do compression and leakdown test.
3rd pull componets to see if valves are opening and closing, (valve clearance check)
4th if valves are good, then timing chain is probably stretched.
5th if timing chain and timing marks are good, and valves are good, then proceed to
testing the signal generator to make sure your getting a signal to the cdi,
6th if you have a signal to cdi, the cdi tells which coil to fire. either # 1&4 or # 2&3.
if signal generator is working, but coils aren't firing right then its the cdi.
obviously your coils work because its firing, just back firing.

Thats all it could be from easiest to hardest.
Good luck and have a great weekend.
Big Al
0helpful
1answer

Suddenly became exremely difficult to start. Fuel ok. Battery fully charged. engine turns over like normal on the starter but just wont fire.

try to perform these :
1. Check the sparkplug if it is good or not,.if it will
ignite when you are going to start.if it doesnt ignite,replace with new one.but when after replacing it is still does not ignite,then its time to check the primary coil.You can check it by looking the wire coming from the said coil through the CDI..(mostly it is a black color with a little stripe of any color.) if you already found the said wire,start the motor and ground the said wire to the body with on & off motion.If while doing this you can notice a spark coming from it,then your primary coil is good.,Thus,its time to check your CDI or need to replace it.
But,if there is a fire in the sparkplug when you start the motorcycle but it doesnt work or fire at all,then you must clean the carburator.
Onthe other hand,if your motorcycle is a dynamo/contact point operated,you must check the "timing" into right settings,or give an importance to the condenser if it has a leak and may cause short during the motor will start..
0helpful
1answer

Retro scooter cutting out and not starting

did you check the sparkplug? is the primary coil is good and still can deliver power?Your ignition coil is good?if all your answer is YES",then its time to check your CDI...
it is 99% the problem is in CDI..Replaced it..,But when your motorcycle is contact point operarted,then check the "timing",if you sure you set the right timing but it is still not firing,then replace the condenser.
You may also get rid to your ignition switch because sometimes there is the problem due to the stucked up of its component inside it at is grounded continously even the key has already turn into "on"mode.
0helpful
2answers

Bike wont fire. has no spark

Sounds like you have all the right new parts. I would double check the wiring. Sounds like that is where the problem is at unless the new coil is bad.
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