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Old 08-26-2012, 04:23 PM   #1 (permalink)
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Default Kfx 700 won't start

Ok so this is killing me I have a kfx 700 it's a 05 ok so here's the story I had this bike and I was riding it it ran great but there's always been a knocking noise at idle I don't worry about it tho because it goes away when you rev it but I left and let my freind bring it back the day after that I started it up and drove it over to the hose to wash it and it was still running fine and even after it was washed it still ran fine I didn't start it up for about a week or two after that and I started it and it was hard to start and had to give it gas to keep it
Running and it ran terrible there was a bad clunking noise all through the rev and it felt like only one cylinder was working so I took the flywheel cover off because that's we're it sounded like the noise was coming from and I seen that there was no gasket there and there was dirt in it but I turned the flywheel with a wrench to see if that was the noise and it wasnt so i put everything*Back together and it started after that it was still difficult*To start and wanted to stall but it ran fine but I put it away for another week or so and after that*when I went to start it I seen that my so called "freinds" tryed to Hotwire it so I plugged everything*Back together and it started up fine but only for about 5 seconds then it stalled and would not start back up at all it cranks but won't turn over I checked all the wireing to make sure nothing was unplugged, I made sure it was getting gas and spark, I made sure it had compression and all that was good so does anyone have any ideas? I can't figure this out and I really need it fixed so any input would be greatly appreciated thanks and srry for the long post
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Old 08-26-2012, 06:42 PM   #2 (permalink)
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Welcome here. Please use several paragraphs with an extra space between each one, to make it easier to read.

When a bike sits for a while then will not start, it is usually bad fuel, dirty spark plugs and/or a weak battery. Check those first. An engine needs 3 things to run- fuel, air, and spark. The factory service manual has procedures for checking all 3.

The knocking sound could be a major problem beginning, or something minor. I would get a mechanic familiar with this bike to listen to it and give you some advice. You could post up a video with the noise after you get it started, but this is definitely second place to having a mechanic look at the bike and doing whatever checks they think are needed.
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Old 08-27-2012, 04:19 PM   #3 (permalink)
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I put new gas in it and checked plugs and it still won't start Is it possible it jumped timing alittle? If so how do I check? And if u have any other suggestions I'd be glad to hear them thanks

Also with that noise What are the things it could be?
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Old 08-27-2012, 04:22 PM   #4 (permalink)
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Or something with the valves?
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