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Discussion in 'Land of the Rising Sun: ADV Bikes from Japan' started by Big Bo, Apr 12, 2017.
Syncing TBs is just like syncing carbs. Same thing.
Hey guys, I made a video to illustrate the issue I'm having. Does it look / sound familiar? Should I proceed with a throttle body sync?
Have you gotten the bike into diagnostic mode to check the TPS sensor and Accelerator sensor position?
I use Carbtune Pro 4: https://www.amazon.com/CARBTUNE-PRO-4-W-Pouch/dp/B018UTHGPE
My bike was doing the same thing you described with the high/low idle as well, but no starting issue.
Is the programmer tied into any of the wires of the harness? I saw one which has you tie into the TPS with a funky wire tap.
I'd pull it...
It was at the dealership two weeks ago and they found a TPS error code, reset it and that was all they could do since the bike was not acting up when it was there and they could not recreate the issue.
The Bazazz fuel controller has a harness that allows you to plug it in to the fuel injector. No cutting or splicing.
The one from the air filter port is normal. Just cleaned mine out.
Not sure on the throttle body.
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This sucks your bike is buggered, I was going to suggest an exhaust leak but watching the video, it looks like an FI issue. As for oil in the vacuum port cap, I could see oil vapor collecting there in the right conditions. His overflow was full and the excess goes into the air box and eventually sucked into the airstream.
Have you disconnected the fuel controller and tried to run the engine stock?
have you seen all the threads on idle issues/stalling?
If it were my bike I would disconnect battery remove the Bazzas ,reinstall battery and see what I had
Can you adjust the idle on the Tenere? Is there an idle adjust screw or do you just tighten up the throttle cable to bump it up?
When you say bump up the idle speed, is that done with the throttle body screw on the left side?
Honestly I don't believe moving the gen wires is an actual solution; merely coincidental. The guys who had really bad idle issues saw only temporary results when trying to move the wires. Moving the gen wires forces you to wiggle/make adjustments to the main harness, which is where I believe the actual problem lies.
Wrapping those wires in foil isn't going to do much unless the foil is grounded; as far as I understand.
Were you able to check the readings on all your throttle position sensors? There are two. I can screenshot the page in the FSM if you'd like. Its very easy.
Hey guys, here's an update on my issue. Syncing the throttle bodies was next to impossible because the bike would not stay on long enough to accomplish that. I took it into AF1 Racing in Austin where they removed the Bazaaz fuel controller and re-flashed the ECU with ECU Unleashed. The bike now runs more sporty in sport mode and touring mode feels like the old sport mode.
I still need to check the throttle body sync as the idle is hovering around 1000 rpm. seems it should be a tad bit higher idle speed. any opinions on that?
I bought the Carb Tune Pro for the throttle body sync but I'm reluctant to mess with it since its running well.
Mine idles right around the 1100 rpm +/- 100 area. 1000 should be fine.
A carb sync can only be a good thing for smoothness, and correct fueling.
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Eigerhiker, I have the same setup as you - AF-1 and my bike idles around 1000 rpm. I completed the throttle body sync and they were not off by much so it did not make much of difference after the sync. Also adjusted the airscrew at the same time. I would say your there. The only thing extra may be to use Engine Med RX to combat ethanol corrosion and any potential carbon buildup. It's not expensive at the Ya-ma-ha dealer, pour some in on occasion and all good.
seems the only time mine wants to die is when I'm running ethashit fuel, put the premo non ethanol and it screams.
Interesting points about the ethanol fuel. Here is a video from Yamaha's YouTube channel discussing how their engines are sensitive to it. At the 4 minute mark our lovely host, Roxanne Flores talks about the Engine Med RX shock treatment.
About a month ago Yamaha agreed to replace the main wiring harness. The bike has bee reliable since. The only explanation they had was maybe there was a bad batch of wiring harnesses during the assembly process. They speculate it was shorting itself out somewhere. Highly annoying experience with an otherwise great motorcycle.
Based on the video above I still use the Engine MED RX to offset the carbon deposits from ethanol. I fill up once a week and just pour in the small bottle adds about $3.00 to my weekly gas expense.
That's awesome news. What did you have to do to get them to replace it?
Glad you were able to get the problem fixed. As far as fuel additives, just do what Yamaha recommends - use NON Ethanol fuel only. I've never used anything but NON-Ethanol 91 Octane fuel. Never a problem. No additives needed.
I take it you don't do much touring, and certainly not through anything remotely resembling the midwest. Marinas, airports, and racetracks are the only places that one can reasonably expect to find E0 around these parts.