Hi,
I have a 2001 California Stone which several members have been very helpfully providing assistance with lately.
For the last year or so it has been popping and banging in the exhaust on light throttle in traffic as it goes from drive to over run and back to drive.
It also occasionally spits back through the air filter as part of it's performance! This all makes it unpleasant to drive around town. On open road with larger throttle openings it goes fine.
I thought that I would try to finally fix this as part of a large service. I have tried balancing the throttle bodies on previous occasions but it has never fixed the problem. So after changing all the oils, filters, plugs and adjusting valves I decided to attempt to set up the throttle position sensor.
I have read up on this procedure and followed the step by step instructions achieving the closed throttle 150mv, followed by 520mv after adjusting the right hand idle screw. I then adjusted the left hand screw until it just moved the 520mv and then backed it off a whisker.
I turned the idle air screws right in and back out half a turn and started the bike. Despite my having ensured that the fast idle adjusters were not in play it would not run below 1500 rpm and I could get nowhere near balancing the throttle bodies.
I took it apart again and rechecked my mv settings which were acceptable. I did tweak the idle screws just to the correct spec as I had twiddled them the first time in an attempt to improve things.
I ran the bike again.
The right hand cylinder was doing very little, as before, punctuated with spitting back through the inlet and blowing the push fit vacuum gauge hose off the manifold. This shows up on the balancing sticks with the left cylinder having a much higher vacuum than the right. Adjusting the idle bypass screws has no significant effect.
Where do I go from here? All and any suggestions welcome!
Thank you.
I have a 2001 California Stone which several members have been very helpfully providing assistance with lately.
For the last year or so it has been popping and banging in the exhaust on light throttle in traffic as it goes from drive to over run and back to drive.
It also occasionally spits back through the air filter as part of it's performance! This all makes it unpleasant to drive around town. On open road with larger throttle openings it goes fine.
I thought that I would try to finally fix this as part of a large service. I have tried balancing the throttle bodies on previous occasions but it has never fixed the problem. So after changing all the oils, filters, plugs and adjusting valves I decided to attempt to set up the throttle position sensor.
I have read up on this procedure and followed the step by step instructions achieving the closed throttle 150mv, followed by 520mv after adjusting the right hand idle screw. I then adjusted the left hand screw until it just moved the 520mv and then backed it off a whisker.
I turned the idle air screws right in and back out half a turn and started the bike. Despite my having ensured that the fast idle adjusters were not in play it would not run below 1500 rpm and I could get nowhere near balancing the throttle bodies.
I took it apart again and rechecked my mv settings which were acceptable. I did tweak the idle screws just to the correct spec as I had twiddled them the first time in an attempt to improve things.
I ran the bike again.
The right hand cylinder was doing very little, as before, punctuated with spitting back through the inlet and blowing the push fit vacuum gauge hose off the manifold. This shows up on the balancing sticks with the left cylinder having a much higher vacuum than the right. Adjusting the idle bypass screws has no significant effect.
Where do I go from here? All and any suggestions welcome!
Thank you.
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