Question about Yamaha YZF 600 R thunder cat Motorcycles

1 Answer

Wont start The bike is turning over it just doesnt start...Problem started happening last week. After messing with the reserve tank (flicked it on the off) the bike started and I was able to make it home. Today it is doing the same thing just wont spark...any ideas or commonalities with these bikes?

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  • 391 Answers

There is a screen in the tank. It may be stopped up. If the bike runs on "reserve" setting I would check that first.

Posted on May 14, 2014

Testimonial: "Thank you. I am hoping it was a bad gas issue. I ran the tank out and it has been fine since. The bike does not run on reserve, I think that it may have been put back together incorrectly as I can visibly see gas in the tank, but with the reserve on/off it doesn't work."

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Posted on Jan 02, 2017

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  • 126 Answers

SOURCE: honda cbr 400 rr starting problem

i could not find a schematic of a 96 cbr400rr, so guessing this bike is not from the USA. however, there should be a master fuse near the battery on the positive side mounted to the battery box somewhere. i would check this fuse first to see if its burned out.

also, is battery fully charged? might have to top charge the battery to get good juice if its old (>3 years) and been sitting for a bit.

good luck.

Posted on Jan 28, 2009

  • 1 Answer

SOURCE: why wont my suzuki bandit 250 start?

If you tried to start the engine for any length of time, the plug would be damp and smell of petrol because fuel was being drawn into the combustion chamber. Without spark to ingnite the mixture, it would cause the plug to become damp. I am assuming you fitted the correct spark plug and that it is gapped correctly.

I don't mean this to sound foolish, but I would suggest you make certain the emergency kill switch has not been accidentally switched off. Also, if you have a sidestand safety interlock that prevents the engine being started while the side stand is down, flip up the sidestand and try again to start it.

Additionally, to make sure the plug wire is securely fitted to the plug. It is possible that the inside of the plug wire cap has gathered moisture and may need to be wiped dry.

If none of the above suggestions solve the problem, remove the plug then reconnect it to the plug wire and hold it near the cylinder - but not near the plug hole in the cylinder head (fuel vapors) - while pressing the starter . You should see an obvious spark. No spark likely means the coil is faulty.

Posted on Mar 14, 2009

  • 46 Answers

SOURCE: wont start

Hi,

Oil from the breather is an indicator of compression bypassing the rings. This causes sump compression.
Cause of the problem is worn rings.
You need to conduct a compression test, if the compression is low then rings are probably the cause of the bike not starting.

Cheers

Jon

Posted on Mar 16, 2009

  • 3567 Answers

SOURCE: Wont start.

Remove and clean the carbs. Also clean the water trap on the petcock, (gas valve), if your bike has a water trap. Remember to balance and sync the carbs after installing.

Posted on Mar 24, 2009

  • 19 Answers

SOURCE: suzuki gs 550 bike wont start they said it doesnt spark?

points and condenser if not that then coil

Posted on Jul 15, 2009

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1 Answer

My bike bike runs on main tank even on low fuel..it somtimes shows some missing. I think my reserve tank doesn't work.Any suggestions?


Check the reserve fuel line and the main fuel line to make sure they haven't been switched. I purchased a Suzuki Intruder and was riding all the way to reserve to check the mileage and when I ran out I couldn't start it even though I switched to reserve. Turns out that someone had the tank off to service the air cleaner and had reversed the two fuel lines so the fuel valve was running the bike on the reserve tank tube. so when I switched to the reserve position it was hooked to the taller brass tube in the tank and the gas level was already below it. The tanks just have two brass tubes, one taller than another so gas cannot be sucked below the taller tube when on main and then when switched to reserve it sucks from the shorter tube allowing the remaining gas to be used.

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As this point you can't get the bike to turn over is this correct? If the engine is turning over but won't start then yes the gas is most likely the problem. Gas after sitting for even a month can evaporate from the fuel system and it leave a fouls smelling deposit behind that clogs up everything. It stinks and it's a mess to clean out. To prevent this from happening use a product that is called "Fuel Stabilizer" in the last few tanks of gas before you put the bike away for the winter or a dormant period. If the motorcycle is in a hot climate or heated garage this foul smelling gas can happen within a few weeks.

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2 Answers

Where is the reserve tank


Is your bike fuel injected or carbureted? If it is fuel injected the tank has a 4.5 gallon tank and that's it. If it is carbureted the fuel petcock is a three position valve (ON, OFF, RES), the valve is configured in the tank where ON allows fuel to flow until you are down to about 1/2 a gallon at which time you would turn the petcock to RES which allows the engine to use the last 1/2 gallon of fuel and gives you time to hunt down a gas station.

There is no separate "reserve" fuel tank.

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How to refill the reserve gas tank 1981 Honda CX500 motorcycle


there is only one tank to fill on your bike, your getting confused by the reserve. The reserve is just on the fuel tap itself. It has three positions, on , off and reserve. In the on position your fuel tap will be able to drink about 90% of your fuel tank and then it wont be able to drain anymore, then you must turn your fuel tap to the reserve position and it will be able to drink rest of your tank approx 10% that is left. So next time you fill up at a petrol station make sure your fuel tap is set to on, then when your bike starts to splutter out of fuel you can turn your fuel tap to reserve and get yourself to the petrol station to fill up, making sure you then turn your tap to on again. If you keep running out on the reserve it can cause debris in your tank to clog your carb up.
hope this helps
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Is the kill switch on? Good battery? The side stand should be up. Is the choke on? Is the bike in neutral? Have you checked the fuses? Headlight should be off.

Get new stock plugs from the dealer. Check to see that the choke will open and close properly. Drain the carbs then remove and clean the fuel valve water trap bowl. Check the wiring harness for unplugged wires and loose connections. When was the last time you installed an air filter?

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