Question about 1997 Yamaha XJR 400

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No spark 1997 warrier was running fine just stopped and has no spark what is most likly wrong i think my cdi box but how do i test it

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Test to see if you have power going to the box with a volt meter and if you do and no power coming out the box is bad.

Posted on Jun 04, 2009

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Miss fire after up to temp and runfor short amount of time. I get a miss fire coming to a stop..drops to cylinders or 1. will not accelerate at all boggs with miss fire.


Joe, i'm afraid we'll need some more info; year, make and model. Have you changed anything to after market like air cleaners or exhaust? How many miles are on it?

Jan 14, 2015 | Motorcycles

1 Answer

Why is my 97 Honda 4 wheeler not getting fire


There are three items that are connected together needed to create spark on your 1997 Honda 4-wheeler, regardless of which model it is.
Before we go through a checklist of these three important parts, look for a black wire with a white stripe that runs to the ignition switch and kill button from the CDI box. Disconnect this wire before it gets to the ignition switch and kill button, then check for spark. The most likely cause is a broken kill switch on the handlebar, or shorted ignition switch. Such a condition grounds this wire and kills the spark.
If this test did not restore the spark, continue reading...
Here is what is required to create a spark.

First, the alternator has one coil which generates a high voltage--about 125 Volts AC for the CDI ignitor box.

Second, there is a pulse voltage generated once every revolution of the engine that goes to the CDI box. This pulse causes the CDI to dump its stored energy from the 125 volt line into the primary of the ignition coil.

Third, If the two connections of the wire that runs from the CDI to the Coil are BOTH SHINY clean, the ignition coil will generate a spark.

If any one of these 3 don't happen, the spark will go away. Of these three, item 3 -- one or two tarnished and/or dirty connectors -- is the most likely cause. Just an added resistance of 0.3 Ohms or more in the CDI to Coil connections will cause the ignition to fail. No other wires have to be this clean.

Sep 26, 2014 | Motorcycles

1 Answer

Kawasaki 300 ATV has very faint to no spark until you stop trying to start, then a full second later, one big spark. Won't run. Any ideas?


Hi mate the cdi if failed you would have no spark period. I strongly recommend re checking stator when spark comes in and out or dies when hot or will only jump start these are all classic stator issues. simple test just need multimeter and read OHMS from the connecting plug of the stator... one of the pairs of wires will read sky high or zero... I don't know exact reading for your model but kwaka will tell you but a dodgy stator will generally read zero on one or more of the pairs of wires cheers mate hope it helps

www.motoxpartsonline.com

Oct 24, 2012 | Motorcycles

1 Answer

My Suzuki GS 550 L wont start


check the cdi box i think thats your problem if so buy a dyna s 3 for it works great on mine

Sep 13, 2012 | 1982 Suzuki Gs 550 L

1 Answer

Can't Start 1981 Yamaha SR250


find a running sr 250 and swop his cdi unit with yours if the bike runs, fine. if not put his cdi back in and try again. if the good bike now starts it will indicate that your cdi is faulty. the cdi is located under the tank inside the frame. don't buy a second hand cdi unless you can test it on a working bike. they are very expensive and you don't want to buy a dud

Jun 09, 2012 | 1981 Yamaha Sr250 Sr 250 Exciter Y213 Air...

1 Answer

92 virago 750. Front cylinder runs intermittently. Coil is good. I cleaned carbs. Suspect CDI. Seems to run fine until it warms up. I recently put new Voltage Regulator in. Stator is not shorted. and...


You have to test all the electronics on the bike to figure out if you have a bad CDI box. A CDI box can test good and still be bad. Your problem sounds more like a bad spark plug cap. Unscrew the cap from the end of the wire and take an OHM reading on the cap. If it is higher or lower than 5000 OHMs replace the cap . A plug cap from NGK runs about $5. Replace them both for about $10 it should take care of the problem.

Oct 04, 2010 | Yamaha XV 535 Virago DX Motorcycles

1 Answer

My 1995 yamaha vmax motorcycle starts fine. when it warms up after a bit it shuts down. the shop is puzzled. they said that all 4 coils test out fine but when it is warm they all 4 just stop. no spark goes...


have them test the cdi box. it is your electronic controler for your ingnition timeing. it could be getting hot and shuting down. when it shuts down. the can take a wire from the negative side of the coil and ground it to the frame touching it and letting go of it instintly and if it sparks its not the coils it will be the cdi box or something to do with the electronic pickups in the motor that gives the signal to the cdi. that it is the correct time to trigger firing. hope this helps out.

Mar 10, 2010 | 1995 Yamaha XJR 1200

1 Answer

My 1981 Suzuki GS1000G has no spark on 3 of the 4 cylinders


cdi unit get the manufacturers to test the cdi out and get back to me

Sep 28, 2009 | 1981 Suzuki GS 750 L

1 Answer

Hi i have an 05 crf150f it wil not get spark at all i have replaced my coil,wiring harness but my stator is getting spark. i think it might be the rev box (cdi)please help me i am tired of fixing it over...


well the stator doesn't give spark it give voltage and if you test it and the is voltage and you have replaced all that stuff with good ones then it is your cdi box.

to test the stator for voltage take a multimeter on the ac scale and test the output of the stator while kicking the bike over if you have voltage rising and falling then your stator is fine. if not you will need to test the pick coil in the stator area for a ground pulse this is what the cdi box uses as a reference for the position of crank shaft and piston. just like a crank sensor in a car. if there is ground pulse there when you back probe the wires coming out of the pick up then your cdi is for sure the issue. if you have any more question please ask. good luck

Sep 22, 2009 | 2005 Honda CRF 150 F

1 Answer

No spark


I too have a 1087 Honda Shadow and after we rebuilt, cleaned and painted the bike, it would not spark.

Behind the battery, check the CDI box. Look inside and shake upside down, looking for the presence of water. Once we completley dried out the unit. The bike runs like a champ.

the other day I rode in the rain for 160 miles. Engine died. Went to the CDI, water was there. Dried it out and again the bike runs fine. I am going to seal my cdi unit now. and hopefully the problem will not come back.

Richard
Colorado

Mar 30, 2009 | 1987 Honda VT 1100 C Shadow

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