Starter will not turn engine over if bike has been sitting over night. I must kick start it, run it a while and then the starter is able to tun it over. Bike has been checked by dealer, new battery, new stator, regulator checked ok. Is this typical for this model?
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Re: 2005 Honda crf450x cold starting
Doulbe check the grounds, & you might need to add and extra ground wire to the bike, closer to the starter. This should help. There is a valve that release the compression when you kick it off.You might see if you can pull this release the compression valve while pushing the start button????
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This problem may have many reason but you can try one of the solutions, when suddenly engine stops and kick rod is going smooth without resistance try push and start by directly in 2nd gear or 1st gear and after it starts keep the engine running by giving small revs for a min....
the bike engine has become cold.ask someone to push from behind while you sit and try kick-starting it.do this for several times.if you have failed and want to end up then go to any mechanic.i think this will work.
The possibilities are many in a cold start problem such as you have listed. First the battery even though it appears to be working my be low in actual cranking power. If the battery is five years old or older this is a great possibility. What happens id the battery turns the starter with every once of power it has but leaves no power to operate the electronic ignition. If the battery is newer then another possibility is a dirty starter motor drawing more power then "normal" there for depriving the ignition. Also don't forget that the starter, engine oil and state of battery charge are all affected by the cold, just turning the engine over with the starter can kill a motorcycle battery is a few crank. Motorcycles are heavily warm weather bias so, it wasn't designed or built to run cold. The engine oil you run in summer months is a higher viscosity then what should be used in colder weather. My Honda Magna 750 at +8c can be just ignorant to start and also needs a long warm up time before pulling away. So my "Rule of Thumb" now is when the temperature reaches +10c I park the motorcycle.
How to use your choke correctly. The choke is only to be used for starting a cold engine. If it is a lever, usually you pull it up for on , and push it down for off. look for some type off arrow, or up & down. To start your cold engine, turn on fuel tap, give full choke, turn key on and press starter or kick start, it is very important that you do not use the throttle while starting with the choke, just turn the key on, and press the starter with full ckoke, and no throttle. Once the bike fires and starts, turn down the choke a little and find a idle, after a few minits, you can turn off the choke and ride off. The use off the choke is only for starting a cold engine.
There is a proper way to start an engine. Most bikes have four controls to assist in starting.
The choke, used when the engine is cold. Pull the red knob for choke.
The " Hot Start " Lever, used when the engine is hot. Pull the lever to lean the fuel mix when the engine has been running.
The de-compression lever, always used.
The throttle, used to prime the cylinder.
Don't kick, instead, push the kick lever downward. You will feel the back pressure as the piston is going upward on the compression stroke to the point the pressure is great enough that the kick lever "locks up". You are very close to TDC. NOW, pull in the de-compression lever. Push the kick lever a little bit more to get the piston past TDC. Now release the de-compression lever. Give the throttle a 1/4 turn then let it snap closed. A diaphragm in the carb gives a shot of gas when this is done. DO NOT do this multiple times because you will flood the engine. Leave the throttle closed when kicking. A flooded engine will often backfire. Now give a strong kick through the full sweep of the kick start lever. Quickly get your foot off the kick lever at the end of the kick to avoid any chance of "kickback" from the kick lever. This happens in the case of a misfire, aka > backfire. It can be very painful, and can even break a leg. I am serious about that. Repeat the process (but without the throttle priming), until the bike starts. Go ahead and give it another primer shot after the 5th kick attempt. A good battery, a clean spark plug, a clean carb and clean air filter will also aid in starting.
I hope it was sitting inside and not outside. This will be a real project bike for you. Bear in mind that your 'free' bike may get costly. The following are general thoughts.
If the bike has a kick starter is it froze up or will it rotate the crankshaft? If it has only an electric starter, remove the bike battery and run jumper cables to the battery leads. Will the bike turn over using a car's battery?
Do the clutch and throttle cables work okay?
Can you shift up and down through the gears?
With car battery hooked up, does it have spark?
Shoot WD40 into each cylinder. Be liberal with the WD40.
Change gearbox oil. Disconnect the chain.
Does this bike have fuel injection or carburetors? CDI ignition or points? How bad is the rust inside the gas tank? Have you checked the cost of the following items?
New chain. New front and rear sprockets (if needed)
Carb rebuild kits (if carbs are there)
Throttle, clutch and front brake cables
Rear view mirrors
Title changeover, License plates and insurance
Electric starter (if needed)
Fuel pump (if injected and if needed)
Get back to me on this bike. I would like to see what you find.