Off idle Hesitation

[myrodman]

Hello I had a post on the carbs overflowing on a RX1 Got it fixed with new O rings and needle and seats I set the idle air screw two turns out Synced the carbs set idle speed to 1500 Now I have a bad hesitation out of the hole I'm 300 feet above sea level Need help Thanks

 

[MrSled]

Hello I had a post on the carbs overflowing on a RX1 Got it fixed with new O rings and needle and seats I set the idle air screw two turns out Synced the carbs set idle speed to 1500 Now I have a bad hesitation out of the hole I'm 300 feet above sea level Need help Thanks

Did you clean or replace the pilots?

 

[myrodman]

Did you clean or replace the pilots?

I cleaned the pilots socking them,spraying carb cleaner thru them and running a small wire thru them

 

[MrSled]

I cleaned the pilots socking them,spraying carb cleaner thru them and running a small wire thru them

Have you tried new plugs?

 

[RobX-1]

Something you might want to check is the TPS (Throttle Position Sensor). I still have my RX-1 but don't ride it as much as the other sleds I have but was getting it ready for the riding season. Last year, I cleaned and sync'd carbs like I always do but noticed when I took it for a spin, it sputtered out the hole and did not run as strong as years past. This year, I did the same but this time, after doing some research on this site, I decided to check my throttle position sensor to ensure it was not only working but was also set correct. I know in the past guys have played with this sensor adjusting the voltage (ie rotating the sensor) at idle (closed) throttle position makes the ignition timing begin its advance run earlier. All I wanted to do was ensure it was set to stock, stock TPS settings range from .710 to .775, and mine was way off that. Once I got it back to the stock position, the sled runs and idles great like it always had; although I did re-sync the carbs after the TPS adjustment. Not sure if this could be your problem but wanted to mention it.

To adjust the TPS, you loosen the 2 phillips head screws securing the TPS to the left side of the 1st carburetor on the carb rack as your sitting on the sled. With the plug still connected, slip one lead of the voltmeter into the black wire and the other lead of the voltmeter into the yellow wire. With the ignition key on and the kill switch not depressed and the engine not running and the throttle closed, see what the voltmeter says. Using the voltmeter, I also rotated the TPS forward and back to check the voltage increased and decreased as I rotated to ensure there were no bad spots (ie bad throttle position sensor).

 

[myrodman]

Something you might want to check is the TPS (Throttle Position Sensor). I still have my RX-1 but don't ride it as much as the other sleds I have but was getting it ready for the riding season. Last year, I cleaned and sync'd carbs like I always do but noticed when I took it for a spin, it sputtered out the hole and did not run as strong as years past. This year, I did the same but this time, after doing some research on this site, I decided to check my throttle position sensor to ensure it was not only working but was also set correct. I know in the past guys have played with this sensor adjusting the voltage (ie rotating the sensor) at idle (closed) throttle position makes the ignition timing begin its advance run earlier. All I wanted to do was ensure it was set to stock, stock TPS settings range from .710 to .775, and mine was way off that. Once I got it back to the stock position, the sled runs and idles great like it always had; although I did re-sync the carbs after the TPS adjustment. Not sure if this could be your problem but wanted to mention it.

To adjust the TPS, you loosen the 2 phillips head screws securing the TPS to the left side of the 1st carburetor on the carb rack as your sitting on the sled. With the plug still connected, slip one lead of the voltmeter into the black wire and the other lead of the voltmeter into the yellow wire. With the ignition key on and the kill switch not depressed and the engine not running and the throttle closed, see what the voltmeter says. Using the voltmeter, I also rotated the TPS forward and back to check the voltage increased and decreased as I rotated to ensure there were no bad spots (ie bad throttle position sensor).

Thanks I'll give that a try and report back thanks again

 

[mitagibs]

Make sure your air box to carb boots are all secured properly and tight. An easy way to check to see if they're all mounted properly is to shine a bright light in behind the air box making sure you can not see any light looking through the air box with the lid removed. I had a similar issue with an off idle bog and turned out to be the air box had slipped off letting air in. Good luck!

 

[myrodman]

Make sure your air box to carb boots are all secured properly and tight. An easy way to check to see if they're all mounted properly is to shine a bright light in behind the air box making sure you can not see any light looking through the air box with the lid removed. I had a similar issue with an off idle bog and turned out to be the air box had slipped off letting air in. Good luck!

Thanks a lot for all the help Replaced the tps sensor Problem gone Love this site