Last model year of "the tick" - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 18 (permalink) Old 11-29-2020, 07:40 PM Thread Starter
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Last model year of "the tick"

I'm glad to be a member of your forum now. I've browsed a lot of information here for awhile now, but just joined a few days ago for reasons I'm about to explain. About 2 years ago I bought my first FJR, a 2006 with app. 52,000 miles on it. I loved it immediately, except for the weird rattling sound from the right side of the engine. Thanks to Google pointing me to a thread here, I learned about the cam chain tensioner and that I better replace it right away. I took care of that and was happy again, until the trans started slipping in 2nd gear. Again thanks to google leading me here, I found out what was wrong, and that it would only get worse until it was fixed. I put it off as long as I could but finally had to tear into the thing. Again thanks to things I've read here, I determined that it was within my ability to do it myself. Well it was a long difficult process, but I got everything back together and started it up about a month ago. Miracle of miracles, everything worked perfectly! Until maybe the 3rd time I rode it after it was back together. I started to hear an intermittent tapping. Now with each successive ride, the tapping seems to be getting more pronounced and constant. The fine details are as follows: The sound is directly tied to RPM. It is present, but fairly quiet at idle, but not until the bike is warm. It goes away at RPM's above idle speed, but comes back around 2500 or so. It doesn't seem to be present above 4000. These RPM values tend to shift around some for reasons I can't comprehend. It's also possibly affected by engine load, in that it seems very noticeable at 3000 RPM in 3rd gear at cruise, but not at 3000 in 5th at highway speed. It should also be mentioned that I measured and adjusted the valve clearance while I had the engine apart. Maybe 7 valves needed adjustment. They are mostly at or near the higher recommended clearance value now. So after all that, the basic questions are: Can my 2006 be a ticker, and if not, what else could explain my symptoms? Thanks for any guidance you wizards can offer.
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post #2 of 18 (permalink) Old 11-29-2020, 09:47 PM
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Tickers were 2004 and a few 2005's from what I know. '06 not a ticker....

Could you have a noisy injector? Can you get it to tick say when on the side stand in neutral at certain rpms (like 2500-3500).

Higher valve clearances are OK, unless you got one high and out of spec. I always double check my clearances after a shim change.
Kinda all I got for the moment...... If you can hear it while it's sitting, then maybe lift the tank and see if you can pin it down. A mechanic's stethescope or even a solid rod held to the area in question and to your ear, can use a piece of rubber hose on it too.....

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post #3 of 18 (permalink) Old 11-29-2020, 11:02 PM Thread Starter
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Thank you for the input. I was already running very long so i didn't add that I have the plastics off and I went over the front top of the motor with a stethoscope. Mainly I was trying to tell if I had a header seal leak. What I found was that the tapping was more pronounced around the #1 header tube and near the #1 exhaust port, but could be detected at least a little bit in all four header tubes. I had not heard of injector noise when I was doing that check, so I didn't listen to the injectors, but I will try that the next time I get a chance to run it. I hope that's what it turns out to be, because I'm beginning to be terrified that I've destroyed a cam lobe.
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post #4 of 18 (permalink) Old 11-30-2020, 08:50 AM
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I don't know how you'd destroy a cam lobe except by running it out of oil.... but you may have a valve clearance thing, maybe not. Shame it's a bit of work to get it apart that far again, dealing with coolant, etc. but carry on with the diagnosis....

Ray
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post #5 of 18 (permalink) Old 12-01-2020, 05:31 PM
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the FJRs with the bad valve guides were '03 and '04....18% in ' 03 and almost nil in '04....never had to do a '05....Yamaha was very good about fixing the ones that went south
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post #6 of 18 (permalink) Old 12-02-2020, 10:38 AM
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post #7 of 18 (permalink) Old 12-02-2020, 12:45 PM
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probably not, but could it be your cam chain tightener, they are known to fail and rattle
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post #8 of 18 (permalink) Old 12-02-2020, 01:41 PM
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just out of curiosity what made the tick happen on the earlier models? was that the cam chain guide?

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post #9 of 18 (permalink) Old 12-02-2020, 02:59 PM
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Last model year of "the tick"

Quote:
Originally Posted by hipi111 View Post
just out of curiosity what made the tick happen on the earlier models? was that the cam chain guide?
Hipi,

As I understand it, the valve guides were too tight, depriving themselves of oil, so they wore excessively. It sounded like the valves were set too loose, even when the valves were really in spec. Aside from the sound, the defining symptom was wet oil leaking into (one or more of) the exhaust pipes. No relation to the cam chain. Slack in the cam chain might sound like you had loose marbles in there, but that problem would not sound like bad valves. The early Cam Chain Tensioners were weak, and some have failed, wrecking the engine when the cam chain slips by a few teeth. The newest CCTs will have a green dot on the housing. You do not need to disassemble anything, to see the green dot on the CCT.
.
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post #10 of 18 (permalink) Old 12-02-2020, 08:06 PM
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The tick results as the valves slapped around in the loose valve guide bores, however they got that way..... which wore on the valve seals and burned a little oil.
It did not have anything to do with the cam chain tensioner.... that was it's own issue, and yes they needed replacing with the new design.
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