From running very good to stuttering

So I'm on my 18th tank Or so
Yesterday did 3 tanks
Halfway the first it ran very good
Wheelies all over
And good top speed
Then out of the blue it started stuttering
Haven't touched anything
So today went out again
Put the needles back to stock
And looked like it was to lean
So richened it up
Did help
But still stuttering when full throttle from stand still
Any idea's???

Vraaltuh said:

So I'm on my 18th tank Or so
Yesterday did 3 tanks
Halfway the first it ran very good
Wheelies all over
And good top speed
Then out of the blue it started stuttering
Haven't touched anything
So today went out again
Put the needles back to stock
And looked like it was to lean
So richened it up
Did help
But still stuttering when full throttle from stand still
Any idea's???

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This might be something to consider but how was your battery charge? I usually run mine 3 tanks and then charge it. Do you think it ran out of good energy for a good spark?

I did change out the battery for a fully charged one
Still no difference
Been trying to richen it up
Then the stuttering stops
But overall performance gets worse!!!
I haven't got a clue

How's your glow plug look? Not uncommon for them to die early deaths during break in. Also, has your weather changed? I know here it's gone from -12 to 45 in the past three days.

I think you meant spark plug Jr. Remember this is a gas model. But I agree that the plug should be changed just to eliminate it as a possible problem. NGK CM6 and gap it at .003 to .005. Hope this helps.

jeepjunk94 said:

I think you meant spark plug Jr. Remember this is a gas model. But I agree that the plug should be changed just to eliminate it as a possible problem. NGK CM6 and gap it at .003 to .005. Hope this helps.

Click to expand...

Daylight savings time has been kicking my butt all day lol

Hey guys
Got some runtime yesterday
Ran good
But I will only run with the old plug
Tried a new ngk plug
But it wouldn't run!!
It did run , just broke a brake disk......

So the conclusion is that it was the batteriers that needed charging?