Author Topic: Problems with carb and engine turn on  (Read 2904 times)

Serch

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Problems with carb and engine turn on
« on: February 03, 2009, 06:52:29 AM »
Here, you can view my carb

I cleaned my carburetor and I have not scored the rounds of the screws.  I know I have to act on three screws, high, low and idle...  Can tell me the number of this screws??

In the table, tells me they are 2'5 laps, but the low or high?









 


 


 





Thx, Sergio
« Last Edit: February 03, 2009, 05:24:34 PM by Serch »
Excuse my poor english. I'm spanish!!

xswheels

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Re: Problems with carb
« Reply #1 on: February 03, 2009, 02:52:49 PM »
I can help you out, i recently dipped and adjusted the carbs on my XS360 which is similar to your XS400. The three adjustment screws you need to know about are the mixture screw; idle screw and synchronize screw.
 If you look at the diagram titled Chapter 4 Carburetion, the syncro screw is number 15 and the idle adjustment screw is number 18. I don't see the mixture adjustment screw on any of the drawings. Quite often manufacturers don't show them because they prefer you don't change the adjustment for EPA reasons. In fact sometimes like with the Vision they put a blanking plug in front of the screw so you don't mess with them. This screw is located  on the side of the carb near the intake manifold at the top of the carb throat. It is brass.
One other thing I should mention regarding the idle screw is it may not be a typical screw, but more likely a plastic thumb screw white in colour. it is best accessed with the tank off and standing above the carbs looking straight down. it is at the rear between the carb boots.

Serch

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Re: Problems with carb
« Reply #2 on: February 03, 2009, 04:40:58 PM »
OK.

The believe that the screw of the mixture is in View A the screw 1; or in chapter 4 up to number 17


My problem now is that the bike don't turn on!! and I don'k know why!!

I put gasoline in the tank of carb, the spark plug is OK...
Excuse my poor english. I'm spanish!!

Night Vision

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Re: Problems with carb and engine turn on
« Reply #3 on: February 03, 2009, 06:06:06 PM »
turn the petcok to "prime" and wait some time
if it ain't worth doing it the hard way....
it ain't worth doing it at all - Man Law
 ;D


if it ain't broke..... take it apart and find out why


don't give up.... don't ever give up - Jimmy Valvano

Serch

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Re: Problems with carb and engine turn on
« Reply #4 on: February 04, 2009, 04:28:09 PM »
nothing nothing
Excuse my poor english. I'm spanish!!

Night Vision

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Re: Problems with carb and engine turn on
« Reply #5 on: February 04, 2009, 05:20:53 PM »
Serch, you have XS400 carbs on your Vision?  ???
if it ain't worth doing it the hard way....
it ain't worth doing it at all - Man Law
 ;D


if it ain't broke..... take it apart and find out why


don't give up.... don't ever give up - Jimmy Valvano

Serch

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Re: Problems with carb and engine turn on
« Reply #6 on: February 06, 2009, 01:02:41 PM »
NO, I have the Yamaha XS400 with the front fork, brakes... of the vision













As you can see, this two bikes are more similar
Excuse my poor english. I'm spanish!!

vadasz1

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Re: Problems with carb and engine turn on
« Reply #7 on: February 06, 2009, 03:15:20 PM »
Black motor......ccccccoooooollllll!!!!!!!!!!!
Keep it upright and she'll always be happy!


'82 Vision XZ550RJ with full fairing, shaved tail light housing and covered in blue hammertone enamel.

joevacc

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Re: Problems with carb and engine turn on
« Reply #8 on: February 06, 2009, 06:47:14 PM »
That is cool   8) 8)
-=[Joe Vacc]=-
“The most pathetic person in the world is someone who has sight, but has no vision.”
Helen Keller

Prophet Of Doom

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Re: Problems with carb and engine turn on
« Reply #9 on: February 07, 2009, 01:53:48 AM »
Looks a little like the illegitimate love child of a vision and a maxim
No wonder you are having trouble with the carbs  ;D

Serch

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Re: Problems with carb and engine turn on
« Reply #10 on: February 10, 2009, 03:14:36 AM »
My mistake. The two main jet are different in the two carbs, and mixed them.. in the carb left I put the main jet of the right..

My other mistake, mixed the connector of the coils. The coil left was connected to the spark plug left but the signal connector on the right!!

Now, I have to carburator...

Thx, Sergio
Excuse my poor english. I'm spanish!!