Re: Yamaha QT 50 oddity

bryanb /
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Ron Brown wrote:

>

> Bryan,

>

> I don't have time to re-read all of these posts so let me try

> to summarize from memory and you can correct me.

>

> You bought the ped, it had not been run for years but ran fine.

It did run fine, but Im not sure how long it sat... I could have been only a couple weeks, as the kid I bought it from was letting people try it ou while he was selling it... and I think a younger brother or neighbor was riding it too... so I can't sat say it sat for years, more like a few weeks, if anything... and its got just 2000 miles on it...

>

> It began "4 cycling" (my terminolgy) at about 25 mph.

it does indeed sound funny. A sudden lose of power is all I can say for sure. Ive never heard a true example of 4 cycling, so I can't say that for sure. A friend of mine also mentioned the word 4 cycling when he rode it the other day... so that might be the case...

>

> Removing the air cleaner and box did not help.

You know, I don;t think i have tried that since I adjusted the oil pump the first time.

>

> Turning off the gas at full speed caused the power to return

> just before it died.

Not power to return, just stopped loosing power long enough for the speed to build up...

>

> Cleaning the carb did not help.

correct.

>

> Decarbonizing the cylinder and exhaust port did not help.

nope... something did change though... its cutting out more often now.... and taking longer to recover.

>

> Conclusion:

>

> Your ped is running too rich.

I was thinking it might be running too lean, actually, after seeing the spark plug again.

>

> Maybe the carb was partially plugged when you got it and

> running fresh gas through it cleaned it up some and you need

> a smaller main jet.

>

> Maybe your needle and/or jet are worn.

>

> Maybe there is fuel in the float, affecting your fuel level.

THe last time i had the carb off, I poured some gas in a big bowl, and held the float under the gas for a few minutes... didn't seem to gather any gas inside it... and I didn't see bubbles of air escaping.

>

> I am surprised that removing the air cleaner and air box does

> not help but I guess yours must be a really good design.

I'll try this as soon as I get a chance, that and the exhaust pipe too... which hasn't been ruled out yet either...

>

> Review all of this then re-post.

>

> Ron

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Subject Written By Posted
  Yamaha QT 50 oddityTopic by: bryan bryan 07/10/01 12:52AM
  Re: Yamaha QT 50 oddityRe: MR MR 07/10/01 02:29AM
  Re: Yamaha QT 50 oddityRe: Carmen Carmen 07/11/01 12:14PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/10/01 04:01PM
  Re: Yamaha QT 50 oddityRe: don-ohio don-ohio 07/12/01 10:42PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/16/01 12:56AM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/16/01 01:04AM
  Re: Yamaha QT 50 oddityRe: don-ohio don-ohio 07/16/01 02:08AM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/16/01 03:01PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/16/01 03:20PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/18/01 01:41AM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/18/01 12:21PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/18/01 02:37PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/19/01 01:22AM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/19/01 11:57AM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/19/01 02:02PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/19/01 03:02PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/19/01 04:08PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/19/01 05:41PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/19/01 06:39PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/19/01 07:24PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/20/01 11:13PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/21/01 11:35AM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/21/01 03:43PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/22/01 06:30PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/22/01 08:58PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/23/01 01:06PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/23/01 10:47PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/24/01 10:59AM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/24/01 11:57AM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/24/01 01:22PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/24/01 09:06PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/25/01 10:18AM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/26/01 04:30PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/26/01 06:01PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/27/01 12:24AM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/27/01 11:38AM
  Re: Yamaha QT 50 oddityRe: Shawna Guy Shawna Guy 08/26/02 02:38AM
  Re: Yamaha QT 50 oddityRe: Bryan Bryan 08/26/02 03:26AM
  Re: Yamaha QT 50 oddityRe: Caton9 Caton9 10/21/02 06:02PM
  Re: Yamaha QT 50 oddity parts!Re: Bryan Bryan 10/21/02 06:17PM
  Re: Yamaha QT 50 oddityRe: Wayne Wayne 08/26/02 09:10AM
  Re: Yamaha QT 50 oddityRe: brynab brynab 07/21/01 07:26PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/30/01 12:24AM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/30/01 12:18PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/30/01 01:46PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/30/01 02:08PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 07/30/01 11:01PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 07/31/01 11:46AM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 08/10/01 11:47PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 08/10/01 11:51PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 08/11/01 12:34PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 08/13/01 08:54PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 08/14/01 12:19PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 08/14/01 03:55PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 08/15/01 01:03PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 08/16/01 01:17AM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 08/16/01 12:45PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 08/16/01 02:00PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 08/16/01 04:42PM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 08/16/01 08:38PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 08/17/01 02:02AM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 08/17/01 12:51PM
  Re: Yamaha QT 50 oddityRe: Brian Brian 08/17/01 03:27PM
  Re: Yamaha QT 50 oddityRe: bryanb bryanb 08/17/01 02:03AM
  Re: Yamaha QT 50 oddityRe: Roy Markee Roy Markee 11/12/01 02:03AM
  Re: Yamaha QT 50 oddityRe: Ron Brown Ron Brown 11/12/01 12:43PM
  Re: Yamaha QT 50 oddityRe: k rude k rude 10/19/02 06:02PM
  Re: Yamaha QT 50 oddityRe: Joe Hunt Joe Hunt 10/21/02 12:30AM

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