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F2 won't start despite battery being fine

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  #1  
Old 09-14-2011, 10:53 PM
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Default F2 won't start despite battery being fine

Ok so, I know it's something electrical, but I've taken the battery out of the bike twice and tested it, and it's had a charge, even though my lights won't come on or anything. Anyways, let's start from the beginning. A few weeks ago, I was going to a friend's house and hopped on my bike. I turned the key, turned off the kill switch, and hit my starter. It cranked but wouldn't engaged, so I tried a few more times, twisting the throttle to try and get it to fire, but to no avail. I noticed each time I tried to start it the headlight went off. Whatever, I'm late, I'll take my car. Fast forward to about a week later. I hop on my bike to see if anything changed. Nope. I hauled her up a small hill and pop started it. Awesome! My first time. I ride around my neighborhood for 10 minutes or so and park back in front of my house. I accidentally hit my starter instead of the kill switch for whatever reason and the bike shut off. I'm dumb, I know. Anyways, I try to start the bike again to see if it charged the battery. It made a whining sound and was ticking, I stopped, and figured I'd try it one more time, and it clicked and all the lights went out. Another week goes by (I'm terrible at getting things done) and I decide to pop start it again, with no luck. It charges a little and the lights by the handlebars turn on, but that's it. I tried rolling down a hill twice and pushing a friend on it twice, but it never started. I took my battery to the auto parts store and they said it should be fine, so I put it on a slow charge and I charged it to 94% and it said 15.5 volts. I put it back in my bike, turn the key, everything comes on. Awesome! Hit the starter. Single click, then nothing. No lights or anything like that. I take it inside and hook it up to the charger and it reads at 100%. I drove to the shop and asked what could be up and he said there should be a main fuse if I follow the positive battery line, and to try replacing that. I unfortunately can't find it. Anyways, does that sound like the problem? My bike does have it's problems, but it's never had any electrical problems before. I'm sorry my post is so long but I wanted to describe as much as I could. Has anyone had this problem before? I can't even get it to the shop for them to look it over. The battery terminals aren't perfect but I know the bike was getting power before I tried to start it, so the fuse sounds like a good idea, but it doesn't explain why it was having trouble before. It also didn't sound like a fuse popping but I could be wrong. Does anyone know what could be causing this? Also, if it sounds like a main fuse problem, can anyone give me an idea as to how to find it please? Thank you everyone, and again, I'm sorry it's such a long story
 
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Old 09-15-2011, 01:10 AM
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From my experience with the main fuse, I don't remember anything coming on and it certainly did not turn over. Mine blew due to a faulty voltage regulator.
The main fuse is a 30 amp and is located under the tank just aft of the air box.

Engines don't run for 3 reasons: 1 Engine is not getting fuel, 2 engine is not getting spark, 3 engine is not getting air. I know that this is basic but, you have to answer what you are missing. I don't yet know all the issues of CBR's but, following those basic rules can lead one to closer answers. Sorry if that is too basic and not specific enough.

Perhaps the kill switch or starter switch has a fault? IDK but, it is easy to test by jumpering across either switch and testing whether the bike will start.
Other thoughts is a faulty starter solenoid not engaging the fly wheel. Starter electrical connects dirty or loose.
Let us know what you have tried.
 

Last edited by BrentUSNss; 09-15-2011 at 01:13 AM.
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Old 09-15-2011, 03:56 AM
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Could be a dickey kill switch, I never use mine so it’s never failed on me, but could be possible. After that check the charging system, there is some sticky's in the f2 section for troubleshooting and testing.
 
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Old 09-16-2011, 09:12 PM
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Thank you for the replies everyone, but I think the earlier issues might be irrelevant, atleast for the moment. The last thing that ever happen was I charged the battery, hit the kill switch, heard a tick, and everything shut off. No lights, to more ticking, and I too the battery inside and it's at a 100% charge. Is it possible there are multiple problems, but a blown fuse is just the start of it? And just to check it in case, is it easier to remove the left side fairings to get to it, or just lift up the gas tank and check?
 
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Old 09-17-2011, 09:27 AM
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If the main fuse is blown, you'll get absolutely nothing at all. Nothing will turn on. No lights or indicators at all. If those are the symptoms, then you have to start with the main 30A fuse. It's attached to the Starter Relay/Solenoid and somewhat hidden. Lifting the tank is the best way to get at it. Did you have your battery Load tested ?
 
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Old 09-17-2011, 11:41 PM
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To be honest, I don't know if it was load tested. I don't remember the term he used but the guy at the auto parts store said it should be at around 190 (Units) and it's at 140 (Units) so I should hook it up to a trickle charger. The last thing I did was hook it up to a trickle charger, charge it to 94%, put it in my bike, all the lights came on including the headlight, I hit the starter, heard a click, everything died, took the battery inside and it's reading 100% charge. I want to bring my bike in but my only friend with a truck is at college. The shop is only 10 minutes away so if I can atleast get it started I can get it there
 
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Old 09-18-2011, 07:41 AM
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Well, if everything died and all the lights went out, then it's probable that the main fuse blew. It's a 30A fuse located on the Starter Relay. It's in front of the battery under the rear portion of the tank. You may be able to get at it by removing the side covers. Here it is on an F3. I suspect the F2 is the same location.

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Old 09-20-2011, 02:51 PM
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Alright, here's an update everyone. My positive terminal was the problem at first because the click I heard was a spark, and if I fiddled with the screw the power would come back. I cleaned it off and now it cranks but it never catches. I tried twisting the throttle to give it gas but it still isn't starting. The headlight dies when I try and start it but that's the only electrical problem. I tried pop starting it which worked once before but it still won't catch, so I don't know what to do. Again, thank you everyone for taking the time to try and help
 
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Old 09-21-2011, 08:09 AM
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You could try this if your battery still has lots of power in it. SLOWLY open the throttle to the fully open position and then hit the starter button. It may clear the cylinders of excess fuel that has built up from it not starting previously. I have never opened the throttle to start my CBR 600 or any other bikes I've owned in the past, as they usually start ok without. If your bike has carbs then try using the choke, no throttle and see if it starts then. Take the plugs out and make sure they are not wet with fuel. While you have them out lay them on top of the cylinder head and turn the engine over checking each plug for a good fat spark. If the spark is weak this will cause poor starting as most of the battery power is being used to turn the starter/engine over. Check your battery terminals are nice and tight and corrosion free. I'm afraid it is a matter of eliminating one possibility after another until you find the fault. Your timing could also be slightly out which would mean the spark is getting to the plugs either too early or too late. A lot to think about, but I'm sure you'll get there in the end. Keep us informed.



Originally Posted by Checkers10160
Alright, here's an update everyone. My positive terminal was the problem at first because the click I heard was a spark, and if I fiddled with the screw the power would come back. I cleaned it off and now it cranks but it never catches. I tried twisting the throttle to give it gas but it still isn't starting. The headlight dies when I try and start it but that's the only electrical problem. I tried pop starting it which worked once before but it still won't catch, so I don't know what to do. Again, thank you everyone for taking the time to try and help
 
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Old 09-24-2011, 12:08 AM
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Originally Posted by highwaypatrol
You could try this if your battery still has lots of power in it. SLOWLY open the throttle to the fully open position and then hit the starter button. It may clear the cylinders of excess fuel that has built up from it not starting previously. I have never opened the throttle to start my CBR 600 or any other bikes I've owned in the past, as they usually start ok without. If your bike has carbs then try using the choke, no throttle and see if it starts then. Take the plugs out and make sure they are not wet with fuel. While you have them out lay them on top of the cylinder head and turn the engine over checking each plug for a good fat spark. If the spark is weak this will cause poor starting as most of the battery power is being used to turn the starter/engine over. Check your battery terminals are nice and tight and corrosion free. I'm afraid it is a matter of eliminating one possibility after another until you find the fault. Your timing could also be slightly out which would mean the spark is getting to the plugs either too early or too late. A lot to think about, but I'm sure you'll get there in the end. Keep us informed.
I was going to check my spark plugs the other day but I don't know how @_____@ I mean, I know how to take off the boot and unscrew them and everything, but I don't know how to get to them. Do I have to remove the tank or is there an easier way?
 


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