Hi everyone, I recently picked up a 1984 R65 and it has come to the point where I need some help from people who know what they're doing. Very excited to join this community!
Basically, I am suspecting that the beancan (ATU?) is causing a high idle, and I'm looking for some advice on what to do next (or if something else is wrong).
The bike ran okay when I first picked it up and I was able to take it for a short ride, although it died a few times. I noticed that when I restarted the bike, the idle was high until I began riding. From what I read online, those seem to be symptoms of sticking weights in the beancan.
Today, I did a valve adjustment and to my satisfaction the engine was noticeably smoother and it started right up (the valves were way too tight before). When I started the engine the idle was still high, even with the engine relatively cold and the choke off. I hooked up my timing light and I can see a 'Z' in the timing window WITHOUT touching the throttle. I believe the 'Z' indicates advanced timing, so does this prove that the ATU is sticking? As far as what I read on Snowbum's website, the timing should show an 'S' when the engine is at idle. My Haynes manual is not very helpful for this.
I guess I am wondering what I should do next. I haven't touched the carbs yet; is it worth trying to balance them at this point? Or should I try cleaning or replacing/upgrading the beancan?
Edit: The tachometer needle is also very jumpy, so it's hard to get a good reading.
Basically, I am suspecting that the beancan (ATU?) is causing a high idle, and I'm looking for some advice on what to do next (or if something else is wrong).
The bike ran okay when I first picked it up and I was able to take it for a short ride, although it died a few times. I noticed that when I restarted the bike, the idle was high until I began riding. From what I read online, those seem to be symptoms of sticking weights in the beancan.
Today, I did a valve adjustment and to my satisfaction the engine was noticeably smoother and it started right up (the valves were way too tight before). When I started the engine the idle was still high, even with the engine relatively cold and the choke off. I hooked up my timing light and I can see a 'Z' in the timing window WITHOUT touching the throttle. I believe the 'Z' indicates advanced timing, so does this prove that the ATU is sticking? As far as what I read on Snowbum's website, the timing should show an 'S' when the engine is at idle. My Haynes manual is not very helpful for this.
I guess I am wondering what I should do next. I haven't touched the carbs yet; is it worth trying to balance them at this point? Or should I try cleaning or replacing/upgrading the beancan?
Edit: The tachometer needle is also very jumpy, so it's hard to get a good reading.