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Scooters - 50cc => Super 9 => Topic started by: Rage on March 09, 2012, 09:58:23 PM

Title: Dead spot at full throttle.
Post by: Rage on March 09, 2012, 09:58:23 PM

Anyone else have this? I only feel acceleration for the first 3/4 of the throttle. After that is sounds louder, but actually will slow down a couple mph's..... ???

Title: Re: Dead spot at full throttle.
Post by: thebatman on March 09, 2012, 10:58:29 PM

If i am not mistaken, that is a rich main jet.
I was going throught the same ordeal with my S9..
It would be good if you would post more info..
Any mods?
Open filter?
BBk?
Carb?
Pipe?

Title: Re: Dead spot at full throttle.
Post by: wordslinger on March 10, 2012, 11:34:09 AM

..yeah, any mods, or a stock scoot??

Title: Re: Dead spot at full throttle.
Post by: Rage on March 10, 2012, 02:48:36 PM

Sorry guys, stock scoot. Not sure if the original owner had it jetted. He did have it derestricted...... The biggest dead spot of the last 1/4 of the throttle above 8,000rpm. I actually have to let off the throttle a little to maintain 48-50mph. I was thinking it was too much air(leaning out) at that rpm... and the stock jetting cant supply enough gas. Lemme know what you think.

Title: Re: Dead spot at full throttle.
Post by: zombie on March 10, 2012, 03:34:55 PM

Get a new plug for a "chop" Just run for a minute at wot to see if the new plug fouls (rich) or leans out (white).

Title: Re: Dead spot at full throttle.
Post by: Rage on March 10, 2012, 04:27:02 PM

Thanks! Whats the best plug for this scoot? I heard someone say iridium......

Title: Re: Dead spot at full throttle.
Post by: wordslinger on March 10, 2012, 05:15:10 PM

..ngk br8hs or br8hsa...

Title: Re: Dead spot at full throttle.
Post by: Rage on March 14, 2012, 01:45:15 PM

Just checked my plug, its a burnt orange color. Only a little sediment around the edges. Is this typical?