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Tapping noise
Posted: Mon Jul 16, 2018 7:45 pm
by jenks
Hi chaps,euro 4 bullet,tapping sound when accelerating,any ideas?
Jenks
Tapping noise
Posted: Fri Jul 20, 2018 4:55 am
by zonggong
My Euro 4 2018 model Classic 500 also has a knocking sound as you have described. I alerted the dealer to this and his comment was that it was most likely a 'noisy' decompressor. If it continued it could be adjusted. Not sure if this is true but other issues with this bike eclipsed this problem and the dealer and I had to spend too much time on what was really wrong with it. The noise is still there but I think has quietened down.
Tapping noise
Posted: Fri Jul 20, 2018 7:57 am
by Leon Novello
A fellow Royal Enfield Club member told me about Castrol Edge 25/50 big bore engine oil when my Bullet was noisy and consuming large amounts of oil. It slowed oil consumption and the engine did seem quieter. It is not cheap, but I think it is worth it.
Tapping noise
Posted: Fri Jul 20, 2018 3:04 pm
by Adrian
Seems to be available in Australia and New Zealand but not in the UK, Leon.
A.
Tapping noise
Posted: Fri Jul 20, 2018 4:37 pm
by Rattlebattle
AFAIK the only “adjustment†that can be made to the auto decompressor is to adjust the tickover. I doubt that this is the cause because unless it clacks on tickover increasing revs when accelerating will tend to have the opposite effect. 25-50 oil would be a bit thick for a cold engine in the U.K. and anyway it shouldn’t need it at what is presumably a low mileage. Oil burning is not a common issue with the UCE motor. Without hearing the noise it’s hard to diagnose but they are not particularly quiet engines and do make assorted noises. Has the camshaft backlash been done? I suspect not all dealers do this.
Tapping noise
Posted: Sat Jul 21, 2018 1:07 am
by Leon Novello
Is the noise anything like SMLE`s in episode VI?
Tapping noise
Posted: Sat Jul 28, 2018 3:16 pm
by jenks
Hi again ,sorry for the time lag replying,been away.
To my knowledge cam backlash has not been checked.
And yes the noise is very similar to smile
Cheers
Genks
Tapping noise
Posted: Sat Jul 28, 2018 3:43 pm
by Deanobats
My 2016 B4 Bullet has very noisy tappets, especially noticeable when accelerating. I just put a louder exhaust on so I couldn't hear them as much...
Tapping noise
Posted: Sun Jul 29, 2018 9:42 am
by 2cvandy
Seems bizarre given that the bike has hydraulic tappets, but yeah, I think it's normal for them to be noisy. My Sportster is just the same.
Tapping noise
Posted: Sun Jul 29, 2018 11:26 am
by papasmurf
Unless you speak the language this is interesting but probably useless:-