Engine Noise Do I have The CCT Rattle? - Honda Rincon Forum : RinconRiders Honda Rincon Forums
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post #1 of 21 (permalink) Old 08-27-2019, 10:02 AM Thread Starter
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Engine Noise Do I have The CCT Rattle?

My motor has had a noise since I bought it used.
I have always thought this motor was noisy.
Now at about 2900 miles. Bought it with about 2200 miles.

I have read about the cam chain tensioner rattle.

I haven't done this:
Just remove the access bolt on the end and insert key or screw driver. Start machine cold and immediately engage the key or screw driver and turn it ccw slightly adding tensioner pressure, if rattle goes away, you have the issue. Be ready to burn your hands...I did.
Thanks Corndog.
Just haven't done this.

The motor has a taping sound that changes with rpms. The tapping will go away when accelerating but return when you let off the throttle.
My neighbor has 2 Rincons with about the same mileage and they both have this tapping sound I mention at idle. I have never rode his ATVs.

Valves are set right. Oil and filter changed frequently. I use Valvoline 10 w 40 full synthetic motorcycle oil. JASO MA2 cert.
It runs great.


Normal for these motors?

Oil it, lube it, fix it. 2003 Rincon
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post #2 of 21 (permalink) Old 08-27-2019, 08:41 PM
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It is usually the CCT or the decompression release on the cam. The CCT is easier to check. Usually.....the CCT will quiet down once bike warms up.

2003 green Rinny (12,400 miles), "25" Bighorn Radials (white letters out) full of extra slime, water pump mod, no warning labels, E Trex, everything else like Mr. Honda made it. 2000 XR 400r (est 3,500 miles). RIDE RED EVEN IF ITS GOT GREEN PLASTIC!

2013 Yamaha Super Te'ne're' (27,400 miles in 22 months), 1996 Toyota Tacoma 4x4 (392,000 miles) on tight and original motor. 2001 4Runner (82,000 miles).
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post #3 of 21 (permalink) Old 08-28-2019, 07:59 AM
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Corndogs method would rule out the decompression cam if the noise goes away. If it doesn't, then your decompression cam may be worn to the extent it rattles at idle and slowly disappears as the throttle increases. Not a problem with so few miles, but later on, you may find it louder than now.
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post #4 of 21 (permalink) Old 08-28-2019, 09:19 AM Thread Starter
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Thanks guys.
Going to run it.

Oil it, lube it, fix it. 2003 Rincon
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post #5 of 21 (permalink) Old 08-28-2019, 05:00 PM
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Quote:
Originally Posted by HighColorado+9k View Post
Thanks guys.
Going to run it.

If the cam chain gets loose enough it can easily jump timing. When this happens, if you are lucky, the engine will run like shit or just quit. If you are not lucky, the valves can hit the piston and you will be learning what the inside of the engine looks like.


Or, it could just be normal rincon engine noise. Mine is quiet.


Like Clint Eastwood said "do you feel lucky?"
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2003 green Rinny (12,400 miles), "25" Bighorn Radials (white letters out) full of extra slime, water pump mod, no warning labels, E Trex, everything else like Mr. Honda made it. 2000 XR 400r (est 3,500 miles). RIDE RED EVEN IF ITS GOT GREEN PLASTIC!

2013 Yamaha Super Te'ne're' (27,400 miles in 22 months), 1996 Toyota Tacoma 4x4 (392,000 miles) on tight and original motor. 2001 4Runner (82,000 miles).
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post #6 of 21 (permalink) Old 08-29-2019, 07:41 AM
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I'd take the 5 minutes it requires to verify the noise. Murphy states , "it will happen when you are at the apex of your trip".
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post #7 of 21 (permalink) Old 08-29-2019, 08:09 AM Thread Starter
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Thanks again all.
I will do the test for the CCT.
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post #8 of 21 (permalink) Old 09-03-2019, 12:45 PM Thread Starter
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I did the CCT test today as described by Corndog.
I'm pretty sure I have the rattle.
I'm going to do it again.

I made a screw driver (key) to test it with out of 5/32 allen wrench. Ground a flat on both ends and finished with a file.
Worked good.


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post #9 of 21 (permalink) Old 09-04-2019, 08:29 AM
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Ticking went away? You can always use that tiny screwdriver that is in your Mom's sewing kit

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post #10 of 21 (permalink) Old 09-04-2019, 08:49 AM Thread Starter
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Quote:
Originally Posted by Oilcan View Post
Ticking went away? You can always use that tiny screwdriver that is in your Mom's sewing kit
Great idea.

I did the test again.
CCW turn made noise lessen.
I loosened the CCT.
Got louder of course.
Turned CCW and it went away.

It still has a ticking sound as I said earlier just like my neighbors machine.
I'm going to try it again.
How long in your opinion do you have to do this test on a cold start?
After it runs for a while ( 10- 30- 60-seconds or more) does this test become useless?
Or can you do this after 2 minutes?

The issue is getting your hands burned is it not?


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