After i change to new fuel, engine was dead on high throttle, so i did some tuning on engine. But the idling had keep changing between high and low. Sometimes it suddenly running on full throttle it self with even radio is off. I'm still beginner on this. Help me pls.
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1/8 nitro buggy carburetor issue
- Thread starter Shelby
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easy rider
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I’d start with the carb linkage. Then look for air leaks.
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Welcome to RCTALK.COM!!! 
Before we get into diagnosis...
bold? Anyway...
What car is this?
What motor?
Is the carb and exhaust still stock?
How old is everything?
What work has been done to it? Any work recently?
Why did you change fuels?
What fuel were you using before, what fuel now? Is the new fuel actually new, from a sealed bottle? Its not your buddy's 'extra bottle' or something, right?
After the new fuel, did you out the old stuff back in to see if it would run again?
For diagnosis here, use ONLY brand new, not Traxxas fuel.
Return everything to factory settings if your tune is out of whack.
Be sure your idle gap is correct.
Be sure all your linkages are snug, operating smooth and correctly and not binding up.
Do you have a throttle return spring installed?
Is your fuel filter clean and oiled? Is your glow plug CORRECT and is it new?
Have you inspected and replaced any damaged or crackedfuel lines?
Is your fuel tank sealed? No leaks?
Do you have any pics or videos to help with this diagnosis?
I see you are a beginer. We all were once. No problem!
Go slowly. Ask lots of questions and we'll see if we can work this out.
Before we get into diagnosis...
bold? Anyway...What car is this?
What motor?
Is the carb and exhaust still stock?
How old is everything?
What work has been done to it? Any work recently?
Why did you change fuels?
What fuel were you using before, what fuel now? Is the new fuel actually new, from a sealed bottle? Its not your buddy's 'extra bottle' or something, right?
After the new fuel, did you out the old stuff back in to see if it would run again?
For diagnosis here, use ONLY brand new, not Traxxas fuel.
Return everything to factory settings if your tune is out of whack.
Be sure your idle gap is correct.
Be sure all your linkages are snug, operating smooth and correctly and not binding up.
Do you have a throttle return spring installed?
Is your fuel filter clean and oiled? Is your glow plug CORRECT and is it new?
Have you inspected and replaced any damaged or crackedfuel lines?
Is your fuel tank sealed? No leaks?
Do you have any pics or videos to help with this diagnosis?
I see you are a beginer. We all were once. No problem!
Go slowly. Ask lots of questions and we'll see if we can work this out.
