I've done 32,000 miles since arriving in the USA in Feb.
Last week, Jorge (Rubber Cow) and I did the 72k major service on the bike. I'd already done the oil & filter change 2k miles earlier. The bike had been getting progressively lumpier and surgy for the last 2-3k miles, which I put down to it needing a good valve & throttle body tweaking.
Well the valves, which were last adjusted 14k miles previously, were spot on. The throttle bodies were, as expected, way out. We re-balanced them with a Twinmax, reset the TPS (ie Fuse 5 out & 2 open-pause-closes on the throttle), replaced the fuel & air filters.
The thing still surges and vibrates excessively.
Now, this bike surged from new and, despite heroic efforts by my dealer's mechanics, only fitting a Techlusion 259 cured it.
I've an appointment with an independent mechanic over in Bend, Oregon (about 3hrs away), on Thursday next week to have a look at it and put it on his Dyno. Talking to him on the phone, he asked all the right questions, was satisfied I'd covered most points except:
Fuel pump - is it producing sufficient pressure? (it's certainly not making unusual noises...).
Lambda Probe - is it on the way out? (I've always been told that, along with lumpy performance, a bad Lambda Probe would also produce excessive fuel consumption - if anything, my fuel consumption has improved...).
Techlusion breaking down - he is a Techlusion dealer & can test for this.
Any other ideas/educated guesses gratefully received...
Mike
This thread is also posted on ADVRider
Last week, Jorge (Rubber Cow) and I did the 72k major service on the bike. I'd already done the oil & filter change 2k miles earlier. The bike had been getting progressively lumpier and surgy for the last 2-3k miles, which I put down to it needing a good valve & throttle body tweaking.
Well the valves, which were last adjusted 14k miles previously, were spot on. The throttle bodies were, as expected, way out. We re-balanced them with a Twinmax, reset the TPS (ie Fuse 5 out & 2 open-pause-closes on the throttle), replaced the fuel & air filters.
The thing still surges and vibrates excessively.
Now, this bike surged from new and, despite heroic efforts by my dealer's mechanics, only fitting a Techlusion 259 cured it.
I've an appointment with an independent mechanic over in Bend, Oregon (about 3hrs away), on Thursday next week to have a look at it and put it on his Dyno. Talking to him on the phone, he asked all the right questions, was satisfied I'd covered most points except:
Fuel pump - is it producing sufficient pressure? (it's certainly not making unusual noises...).
Lambda Probe - is it on the way out? (I've always been told that, along with lumpy performance, a bad Lambda Probe would also produce excessive fuel consumption - if anything, my fuel consumption has improved...).
Techlusion breaking down - he is a Techlusion dealer & can test for this.
Any other ideas/educated guesses gratefully received...
Mike
This thread is also posted on ADVRider
