Weak Throttle
Weak Throttle
Just inspected and adjusted my throttle cables. Also just moved to Phoenix, AZ where the temps are consistently above 110 degrees. I don't know if its the temperature or if there is maybe something else going on.
The best way to explain it is the engine plays catch up with the throttle. There is a slow or weak response to an open throttle and the bike doesn't seem as get-up-and-go as it used to. I've kept it serviced regularly and it just passed the 26k mile mark. Any insight is appreciated, thanks!
The best way to explain it is the engine plays catch up with the throttle. There is a slow or weak response to an open throttle and the bike doesn't seem as get-up-and-go as it used to. I've kept it serviced regularly and it just passed the 26k mile mark. Any insight is appreciated, thanks!
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Joined: May 2015
Posts: 22
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From: waterford mi
excessive heat can cause a drop in power thou if the motor is cool just after starting it should pull as it did before did the problem start after you adjusted cables or not be careful that they are not over adjusted if not make sure that the throttle is opening all the way grew up in California have ridden all my life heat is a problem been to pheniox many times you can cook a steak on the sidewalk
So if an EFI is a computer controlled fuel delivery system (which my bike has), and the ECU reads various sensors that determine how much fuel to allow to the engine, then I don't understand. It's based on the sensor inputs and the fuel map, correct? I cannot confirm this info, but I've read the various sensors include RPM, engine temp, air temp, throttle position, manifold pressure, crankshaft position. Engine temp and air temp are the only ones that would apply where I am. Since it is also based on the fuel map, aside from the sensor inputs, I have questions about my TTS MasterTune2. Anyone who is familiar with this, is it possible to retune without a dyno? I think I've read/watched videos on this, but I'm pretty ignorant on this topic so please enlighten me.
Last edited by sdeck86; Jun 14, 2015 at 06:42 AM.
HDF Community Team
Joined: Jun 2006
Posts: 12,776
Likes: 2,607
From: san antonio
So if an EFI is a computer controlled fuel delivery system (which my bike has), and the ECU reads various sensors that determine how much fuel to allow to the engine, then I don't understand. It's based on the sensor inputs and the fuel map, correct? I cannot confirm this info, but I've read the various sensors include RPM, engine temp, air temp, throttle position, manifold pressure, crankshaft position. Engine temp and air temp are the only ones that would apply where I am. Since it is also based on the fuel map, aside from the sensor inputs, I have questions about my TTS MasterTune2. Anyone who is familiar with this, is it possible to retune without a dyno? I think I've read/watched videos on this, but I'm pretty ignorant on this topic so please enlighten me.
https://app.box.com/shared/32spoht1c5
Open the below link to a guide to Vtune without a dyno with the TTS Mastertune. The guide was written by "Doc", one or the best tuners in the country. Follow the guide and you will get a decent tune from the process.
https://app.box.com/shared/32spoht1c5
https://app.box.com/shared/32spoht1c5
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