When I start my 09 RT from completely cold I hear a knocking from the right cylinder that goes away in about 30 seconds. I adjusted the valves over the winter and all was quiet until about a week ago. Is this something to be concerned about.
Morning gateway guy
Yes, I would be just a bit concerned about it until it is identified. If just a chain slap due to tensioner bleed down then no problems. On the other hand if something more serious then it should be addressed.
Problem with identifying engine noises over the internet is we canít hear them.
We either need you to become our ears and explain the noise exactly in frequency, intensity, position, reaction. Or you might need to get the bike to someone that has the background & experience to help you identify the noise.
Maybe try an oil change to see if new oil with a thicker base will change the noise.
Also maybe buy a cheap mechanics stethoscope then remove the stinger and end diaphragm so you just have an open hose, then listen to different engine areas on cold start to try & identify the area of the engine the noise is coming from.
Also try starting the engine clutch pulled in, clutch out, clutch in and trans in gear (kickstand up) , etc to see if you can effect the noise.
I can tell you for experience that tracking down an engine noise that only appears at starting is difficult enough if leaning over the engine and all but impossible from a long distance.