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Old 11-04-2010, 12:37 PM   #1
Alpinestars102
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HUGE Problem With F4i!!

OK so I replaced my cam chain tensioner on my F4i to a manual CCT. I got it on snug it up, went to start my bike and it would try to start but wouldnt. Then came a weird smell and smoke up through the throttle body. I have no idea what it could be. The first time i tried starting it it would make a clanking noise. I was out of gas so I added some, it started the next couple times then came the smell and smoke. I have never heard or seen this. Oh and one more thing, when I kept trying to start it i cranked the gas throttle and out came a flame from the left throttle body hole or whatever you call it. Any help please?!
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Old 11-04-2010, 12:39 PM   #2
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sounds like you have the cam chain tensioner too tight, or maybe your bike has jumped time.

Last edited by Prodigy; 11-04-2010 at 12:42 PM.
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Old 11-04-2010, 12:42 PM   #3
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i did that, but still wont run, think maybe its flooded? i've never heard of a flame shooting out.
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Old 11-04-2010, 12:44 PM   #4
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after you loosened it does it still make the clanking noise.
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Old 11-04-2010, 12:45 PM   #5
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how would i figure out which one of those it would be? thanks for your suggestions by the way
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Old 11-04-2010, 12:47 PM   #6
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no, it just tries to start without any sound now. it made that sound when it was loosened all the way out. then i tightened it snug and backed it out some. then that happened.
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Old 11-04-2010, 12:53 PM   #7
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the clank could have been a piston hitting a valve.....
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Old 11-04-2010, 12:55 PM   #8
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so what should i do?
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Old 11-04-2010, 12:58 PM   #9
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Sounds like it is way out of time. If it is, the piston to valve collision poo poo mentioned may have happened. If it did, hopefully you didn't bend or chip a valve. The flame out of the throttle body is from detonation occurring when the intake valve is open.
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Old 11-04-2010, 01:07 PM   #10
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That makes since. I didnt hear any big noises that would lead me to believe it was a piston on valve deal, it was just makin a noise where it was tapping something as it was trying to start. Then when i added fuel it went away. How do i get it to be timed again?
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Old 11-04-2010, 01:25 PM   #11
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easiest way is to take it to a shop
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Old 11-04-2010, 01:26 PM   #12
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while your at it advance the ignition 1degree.
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Old 11-04-2010, 01:41 PM   #13
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I've got the manual, I just cant figure out where it says how to time the chain. I dont want to spend money to get them to do it lol. I'm cheap
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Old 11-04-2010, 01:47 PM   #14
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It's jumped time and possibly bent a valve.
Pull the valve cover and put it back in time, then run a compression test and see if you hurt anything.
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Old 11-04-2010, 01:54 PM   #15
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alright thanks Patrick, ill do that. i got the nut seal by the way lol
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Old 11-04-2010, 02:35 PM   #16
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how do i know if its timed or not? i hear a clicking noise. in the book it says a certain point should be lined up, but doesnt say anything about clicking noise.
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Old 11-04-2010, 03:38 PM   #17
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Put crank at TDC using wrench and inspection port on left hand side of motor (I am assuming it has one). Pull off valve covers and have a look see.
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Old 11-04-2010, 04:35 PM   #18
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or take it to patrick
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Old 11-04-2010, 04:51 PM   #19
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i did that jason, but Patrick said i need to look at the mark on the cam shaft itself too
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Old 11-04-2010, 05:05 PM   #20
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Forgive me cause I'm still learning and most of my knowledge comes from my KTM, but if you can access rocker arms, if it jumped alot, I would think rocker arms would be tight. Or looking at cam lobes might tell you if it jumped alot also. I don't think you'd be able to tell if it only moved on tooth.

Again, qualified mechanic is likely best bet.
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