Many problems with Engine

[bladebj]

go here
http://www.bikebandit.com/suzuki-motorcycle-gs500ew-1998/o/m6058
go to the carburetor diagram

you need to have piece # 14
yes, there are 2 different items listed in the diagram
one is a Vacuum cap on top of Piece #6(a vac block off used on many autos)
and the other one is a very small o-ring
you need both items on both carbs
the slides (#7: VALVE, PISTON) need a vacuum to overcome the spring pressure holding them down

I hope this helps

thanks for answer

the other parts of carb is ok just an oring missing

i will check it but yea i think circle one (#14 circle one on the schematic) is missing but why this pipe is covered with an oring (#14 top on the schematic) in other words why carb has these pipes, they did the pipes and after they closed them ? maybe you explain but i still cant see the picture.

[Paulcet]

The item marked 14 in the top schematic is really a cap.  It is used to cap the vacuum port on top of the carb.  The vacuum port on top of the carb is there so you can attach a vacuum gauge for carb synchronizing .  (I think #14 in the top should have been labeled #10)

And, yes, you will need both items (o-ring and cap)

[bladebj]

oh god i see thanks for reply

so exactly this cause a problem like i mentioned wow it's really important oring

[werase643]

yes very important

[lawman]

anyone ever replace that o-ring w/ Permatex, btw?

[bladebj]

by the way as an adittion to these problems i disturb the mixture screws that mentioned in the manual "do not disturb them their setting is done by special tools"

how can i set them default again

is there any certain turns to set them for example close them and turn it two round?

[werase643]

2.5 turns out is a good starting point

[bladebj]

2.5 turns out is a good starting point

oh thanks really many thanks

[bladebj]

i fixed oring problem and checked everything again put carb together and plug it but there is some different problem when throttle now dont stay there but return very slowly like

RPM= 1k->(Throttling)-> 5k-> (returning) 4.5k 4k 3.5k 3k 2k ... and my engine run very badly i always hear clock sound click not valve noise it comes from cylinders and not rthymic very loudly

my exhaust smoke is black and my exhaust banging
when i remove air box carb takes more air and this problem (slow returning above) decrease but still there and while i look at holes of carb where air box removed i saw fire in the carb when i throttle suddenly.

carb always blows and sometimes smoke comes from carb where air box removed side but i really dissapoint i guess i cant ride it well again even i fix carb (maybe this sound and unstable running of engine due to carb) i cannot solve my noisy engine not noise but also clicking poor idle and some other noies i scare my carb blows up  fire dancing in it

[bladebj]

futhermore

i noticed that although i cleaned everything carefully the under the vacuum cover and near the diaghram turned to black and looking very dirty

my engine do not take air-fuel mixture and push its back?

im getting crazy

[lawman]

i fixed oring problem and checked everything again put carb together and plug it but there is some different problem when throttle now dont stay there but return very slowly like

This can be fixed by readjusting your throttle cable.  Loosen the nut on the carb.  I've never figured out the correct adjustment for this, but I know it can be loose and still work, but too tight and the throttle won't return.

RPM= 1k->(Throttling)-> 5k-> (returning) 4.5k 4k 3.5k 3k 2k ... and my engine run very badly i always hear clock sound click not valve noise it comes from cylinders and not rthymic very loudly

The first part may be a function of the sticking throttle.  If, not, you have a hanging idle which is generally a vacuum problem.

take out your spark plugs and look in the hole.  If you have the carbs off look in the intake.  This noise could be very very bad.

my exhaust smoke is black and my exhaust banging
when i remove air box carb takes more air and this problem (slow returning above) decrease but still there and while i look at holes of carb where air box removed i saw fire in the carb when i throttle suddenly.
carb always blows and sometimes smoke comes from carb where air box removed side but i really dissapoint i guess i cant ride it well again even i fix carb (maybe this sound and unstable running of engine due to carb) i cannot solve my noisy engine not noise but also clicking poor idle and some other noies i scare my carb blows up  fire dancing in it

I still think you need to get your valves adjusted before you even consider addressing any of this.  I'm betting the valves fix a lot of it.

i noticed that although i cleaned everything carefully the under the vacuum cover and near the diaghram turned to black and looking very dirty

my engine do not take air-fuel mixture and push its back?

im getting crazy

  Lost me.
vacuum cover?

Get the valve clearance fixed.  Look in the cylinders through the plugs and/or intake.  Loosen the nut on the throttle.  Then tell me what the symptoms are.

[bladebj]

----------------------
confused  Lost me.
vacuum cover?
-----------------------

yeah vacuum cover and around the diaghram are black and dirty really interesting

me and my friend cant understand he rebuild and Husaberg engine but cannot solve this problems really im am very sad know

[lawman]

vacuum cover?

In the carb?

Valve cover?

I don't know what you're referring to here...

[bladebj]

vacuum cover?

In the carb?

Valve cover?

I don't know what you're referring to here...

http://www.bikebandit.com/suzuki-motorcycle-gs500ew-1998-carburetor/o/m6058sch246854

under the #6

and #8 around

[lawman]

Have you looked very carefully to see if there is a hole in the diaphragm?

[bladebj]

Have you looked very carefully to see if there is a hole in the diaphragm?

yea i checked it very carefully maybe from carb piston or carbpiston and the needle connection this weekend i will try and check more and will add photos to clear comments

thanks man for your interest

[bladebj]

ok after some works i found new things

First i realized my left piston did not run the reason why i test the piston is while my friend turns the mixture screw of right one engine sound is changing but while he turns the left mixture screw there is no change on the engine so while idling i removed left spark plug cable engine didnt stop but when i removed right one engine died BINGO my left piston did not run

i tested it more when i pull choke a little left one began to run but not probarly banging and loud

i throttled to 5k so again the left  began to run

so i decided the left pilot jet has problem i opened my carb and with guitar string i cleaned the hole again if problem is not any dirty in the pilot jets what could be?

[lawman]

First make sure the plug is sparking (take it out, lay it on the engine, and hit the starter.  Should be a fat blue spark.  If not, change it.), then test the compression (w/o a compression tester, you can pull the plugs off, put a rag in the plughole, and hit the starter.  If the rag shoots across the room, that should be satisfactory).  Start there.

[bladebj]

First make sure the plug is sparking (take it out, lay it on the engine, and hit the starter.  Should be a fat blue spark.  If not, change it.), then test the compression (w/o a compression tester, you can pull the plugs off, put a rag in the plughole, and hit the starter.  If the rag shoots across the room, that should be satisfactory).  Start there.

i checked it sparking and also change the spark plug left to right (the left plug was dark black right plug was orange and white )  there is no problem with spark or cable as i mentioned it running when i throttle or pull the choke cable(both situation not running proparly running badly) only it did not run while idling

the right has no problem it is running well.

i also check the vacuum balance there is no problem the carb is balanced and clean now.

i set needle one notch higher than stock

it looks like my pilot jet has a problem but i did that all i can do about it

[werase643]

do a compression test and post the results,   please