Question about 2005 Yamaha FZ6

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Ignition I have a yamaha FZ6 with points ignition and it will only spark part of the time when you kick it over. I've had it run but it would only run for about 5 seconds.

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  • Gorggg Jan 16, 2009

    I have a difficult time getting it to start. yellow spark and it will run about 5 seconds and then appears to flood itself or can this be the yellow (Weak)spark? I have a points igniiton and they are correctly gapped. George


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What troubleshooting measures have you tryed so far? Cleaned and gapped the pionts? Check all the wiring connections for tightness and corrosion, check the wires for continuity, check the high tension lead to the plug and change the plug.

Posted on Nov 10, 2008

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2004 yamaha yz250f ran all weekend then the next day after riding it, it wouldn't start

Hi, Alex and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
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.
Bike won start just backfires occasionally
Dirt Rider Magazine
YAMAHA YZ250F Owner Service Manual
OEM parts for Yamaha

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2006 fz 600 starts runs fine for a minute or two then dies

You need to check when problem accures check fuel flow then and check spark maybe first , if it takes awhile to start maybe crank angle sensor

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2006 yamaha fz6 wont start

Have you check the Engine Control Unit? Fuel injection systems are generally electronic and are controlled by a small computer. If it fails it would stop the engine running. The fact that the bike starts with externally supplied fuel would point towards an ECU problem.

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How do you check the timing and adjust the carb. My problem is every time I try to start my 75 yamaha 400 endro it will kick over but won't run I have spark and it wants to go and sounds like it will...

Hi, is this still on points ignition? The spark should occure between .5 and 1 mm before top dead centre, on some of the older machines the ignition timeing is not addjustable as the backing plate is fixed, however the ignition timeing can be determined by the correct points gap, the points should open at the correct time as the piston reaches the top of the stroke, if you dont have a top dead centre gauge, you could improvise by making some markings on a thin rod which you will insert into the spark plug hole, rotate the engine in the correct direction by hand until the piston is at top dead centre, that is the piston has reached its upermost stroke before it starts to decend, at tdc turn the engine back the required amount untill your markings point out the required amount, it is at this point the points should just sepparate creating a spark, a test light with a small 9volt battery in line will indicate the separation of the points, i would however like to stress the third most important item to make a two stroke run is compression, spark and fuel alone is insufficiant without it, on machines that have been standing for long periods of time the piston rings can become stuck in the piston, not allowing the rings to seal the bore, remove the exhaust and look up the Port the piston should look as new with no scoring to it, any damage will prevent the engine from running, as will worn crankshaft oil seals which can become soft from old fuel contamination

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1982 yz 125. try starting it, takes a lot of kicks. when she finally starts, she runs and idles strong. now she putted out, i cant her started again, and while trying to start it, it popped like a backfire...

Sounds like the spark plugs are not properly gapped, carb flooding from too many tries and ignition timing chain has moved away from specified point. Just try to check those components.
Start taking the spark plugs out, gap them properly according to factory specification, use air compressor air duster to blow excess fumes out of the combustion chamber. Remove the engine/valve cover. Check whether the ignition timing notched are still properly aligned. if not then use the timing adjuster to tighten the slack else if already maxxed out then need to replace it.
Hope this helped. Cheers

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you need good compression ( at least 90 psi , kicking it with the throttle open) , good crankshaft seals for sucking the fuel/air into the botton end, proper point gap and timing set for spark ( spark should be big and fat,if not the source coil is weak,, this is a flywheel magnito ignition and it needs no battery to fire the plug) if you clean the carb, make sure you also clean the choke pickup tube or it wont choke. also make sure you have the slide installed in the right direction ( not backwards and the idle is not set too high at first...compression/****-good spark at the right time-proper fuel/air ratio and it will run

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Need apaint code for yamaha fz6 black

Look @ for your bike...........I'm not seeing the black on that bike

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Remove both sparkplugs from engine. Plug them back in the sparkplug cables and let them rest on the engine.
Make sure your battery is well charged.
Check for sparks while kick-starting...
Interchange the sparkplugs in the cables:
-Same plug give sparks: replace the spark plugs.
-Same side of engine sparks: interchange the low-voltage connector at the ignition coils.
Give it a try:
Same engine side sparks: Replace the defective ignition coil.
Other side of the engine sparks: Check the circuit harness for loose connectors, and/or Clean-replace the breaker points ( left side of the engine carter ).

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Info found @

Hope this what you were looking for

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