Valve train noise - Honda CRF1000L Africa Twin Forum
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post #1 of 17 (permalink) Old 12-07-2016, 12:11 PM Thread Starter
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Valve train noise

Anyone else out there experiencing unusual noise coming from the valve train? I am at about 1000km, about to go in for the first service, and am hearing a "ticking" sound when the engine is warm. It's not expansion noise, it's not a normal rhythmic sound. It is a heavier click that comes at odd times in the cycle.

I have recorded it but can't post it here as it is a .mov file.

Any thoughts?

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post #2 of 17 (permalink) Old 12-07-2016, 12:43 PM
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Hey VicAT
I hear it too.
I have to listen for it, but I hear the ticking??
You in Vic BC?
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post #3 of 17 (permalink) Old 12-07-2016, 03:23 PM
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Mine makes a ticking at idle, which goes away on power. I am going to have a look at the valves when it comes out of storage in spring.

...though mine has _significantly_ more miles on it than yours.
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post #4 of 17 (permalink) Old 12-07-2016, 07:51 PM Thread Starter
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I do live in Victoria. There doesn't seem to be anything wrong power wise. It doesn't miss under power. I just find it a little disconcerting seeing as it is still virtually brand new. Anyway, just one more thing to ask about at the upcoming service. I'll post anything the dealer says about it.

Last edited by VicAT; 12-07-2016 at 07:55 PM.
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post #5 of 17 (permalink) Old 12-08-2016, 01:38 AM
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All motors make noise, rc51 v twin make's a different valve noise, the gear drive v-4 vfr valve train make a different noise, and this motor is parallel twin 270 crank unicam and it makes a different noise, it is a off beat noise, and it makes great torque. Honda know motors. Valve noise change's through it's rpm range like all motors. ride it and check valve's at 19,000 kms. [like the service manual say's] This bike give's me a big smile.
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post #6 of 17 (permalink) Old 07-20-2017, 12:24 PM
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so what was it?
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post #7 of 17 (permalink) Old 07-20-2017, 01:49 PM
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Here's another AT (manual) with engine noise.
It is present when the engine is cold on start up. It is a very noticeable "ticking" noise, very much like the tappet noise from older designed engines. It is a loud tick which diminishes as the engine warms up, say after 10 miles. I can hear it quite clearly with my helmet on at 30 mph, when I accelerate mildy with a cold engine it grows louder.
It is not low oil, nor is it chain as it is present when the bike is stationary.
Any clues guys ?

M
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post #8 of 17 (permalink) Old 08-14-2017, 11:56 PM
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I was just going to post about this topic, new owner, only 250 miles or so on the bike. I'm wondering if it the injectors?? Sounds 'tappety' but comes and goes depending on rpm and load...

Engine feels very healthy. Lack of any real break in directions worries me a bit, no rpm/mileage limits specified.

First bike I've had new that didn't specify those for break in. I believe in riding aggressively, but no max rpms or heavy throttle for 3000 miles or so. And I change this oil and filter at 100 miles, and then again at the First Service recommendation in the maintenance schedule... Probably a bit old school there...
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post #9 of 17 (permalink) Old 09-01-2017, 07:47 PM
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same here , ticking noise on the right side , we will see what Honda has to say
as it is still in warranty , but I am sure it is valve clearance issue due to the
fact that valve clearance decrease as engine temp increase . This is why you
can hear it on a cold to warm engine but seems to be gone on a hot engine .
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post #10 of 17 (permalink) Old 09-01-2017, 08:30 PM
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It is a Honda. Just wear earplugs and quit worrying.
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