26-03-13, 01:55 AM
Hi guys, been noticing a rattle on my bike every now again when pulling away at low revs. It's a loud metallic sound that I can't quite pinpoint but it's on the left, possibly near the sprocket? My front sprocket nut is fine I've checked that. It occurs more frequently if I'm carrying a pillion that is at least 10 stone or so or if I go up a steep hill in too high a gear when it's cold. Oil level is good, I'm changing it soon though. I checked the plugs today and the colour is nice but the outer two were very rusty, this included the threads is that a problem? Can I carefully clean the threads in the head with a cloth soaked in some acf-50?
Also, sometimes when I pull away the revs can drop from idle to around 500rpm for a second or so before it returns back to normal. I have seen the thread about fuel additives and that sounds interesting to try, it doesn't always do it but it is quite random when it does choose to do it. The only time all is seemingly well is if I have been on a ride of at least 10 miles, its usually fine for the next few days but then returns if I do too many short trips at under 4k rpm. I am servicing it within the next month or so, it was allegedly serviced at the dealership I bought it from last year. The engine is really smooth when warm and pulls great its just pulling away sometimes can be annoying, it never stalls though. Any advice would be great thanks.
Also, sometimes when I pull away the revs can drop from idle to around 500rpm for a second or so before it returns back to normal. I have seen the thread about fuel additives and that sounds interesting to try, it doesn't always do it but it is quite random when it does choose to do it. The only time all is seemingly well is if I have been on a ride of at least 10 miles, its usually fine for the next few days but then returns if I do too many short trips at under 4k rpm. I am servicing it within the next month or so, it was allegedly serviced at the dealership I bought it from last year. The engine is really smooth when warm and pulls great its just pulling away sometimes can be annoying, it never stalls though. Any advice would be great thanks.