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first post Carb Problem

  • Thread starter Thread starter Saynna
  • Start date Start date
S

Saynna

Guest
Hello , i have to tell u befor im a "frenchies girls" and my english is not realy good.

I brought a gs 850 83 last years . Start fine and idl fine but when i go higher then 5000 rpm its start doing back fire and almost die .when i ride and pull the throttle to the maximun and release then maximum then realese like 5 time i can go to higher rpm but whit weird nose and backfire.

I cleaned all carb 2 time , new fuel line,new sparkplug ,new wire. now i almost give up....
i have no money to go to the motorcycle shop and i always do my hown repair to save $$$ .

Anyone have a clue ?? prety plz

Thank alot

Saynna
 
Saynna said:
Hello , i have to tell u befor im a "frenchies girls" and my english is not realy good.

I brought a gs 850 83 last years . Start fine and idl fine but when i go higher then 5000 rpm its start doing back fire and almost die .when i ride and pull the throttle to the maximun and release then maximum then realese like 5 time i can go to higher rpm but whit weird nose and backfire.

I cleaned all carb 2 time , new fuel line,new sparkplug ,new wire. now i almost give up....
i have no money to go to the motorcycle shop and i always do my hown repair to save $$$ .

Anyone have a clue ?? prety plz

Thank alot

Saynna
Click to expand...

Are the float levels set correctly?

Where in France are you? My wife's mother is French and we are going to France for 3 weeks in September. Her family lives in Chaumont.
 
float are supose to be perfectly set .

im from Quebec canada :) not france im a french canadian
 
Saynna said:
float are supose to be perfectly set .

im from Quebec canada :) not france im a french canadian
Click to expand...

Could be a weak coil if you feel the carbs are setup properly. You can generally find a set off a late model Bandit or Katana for about $30 US on Ebay.
 
GS850 Carb problems

GS850 Carb problems

Make sure your air vent to the carbs are free, either the passages or hoses. It'll start/idle nice but as fuel is drawn out the closed/retricted vent causes a vacuum in the float bowl and restricts fuel flow and leans out suddenly. Hope this helps.
 
If the carbs are OK, then its most likely an electrical problem.
As Billy Ricks says, check the coils. Check the spark across each sparkplug - if its a weak spark (barely visible), then something is wrong. Also check the battery - make sure its fully charged and is charging properly (measure the voltage across the battery with the engine running - it should be between 13.5 and 14.5 volts). The bike may have a dead regulator/rectifier, which is quite cheap and easy to replace.
 
Billy Ricks said:
Could be a weak coil if you feel the carbs are setup properly. You can generally find a set off a late model Bandit or Katana for about $30 US on Ebay.
Click to expand...

Just curious, I have a 1979 GS1000E, with points, but may want to go to Dyna ignition in the future, not sure yet. You mentioned that late model Bandit/Katana coil. What year range would work?

==================================================
1979 GS1000E

"The less you know, the more you believe."
"We thought that we had the answers, it was the questions we had wrong."
 
mkaczmarek said:
Just curious, I have a 1979 GS1000E, with points, but may want to go to Dyna ignition in the future, not sure yet. You mentioned that late model Bandit/Katana coil. What year range would work?

==================================================
1979 GS1000E

"The less you know, the more you believe."
"We thought that we had the answers, it was the questions we had wrong."
Click to expand...
Right up to the current models. GSXR coils will work too but the latest models have individual coils built into the plug caps. Here's a set for $30 on Ebay now.
http://cgi.ebay.com/ebaymotors/2004-Suzuki-Katana-Ignition-Coils_W0QQcmdZViewItemQQcategoryZ35594QQitemZ4630744965QQrdZ1QQsspagenameZWDVW
 
could it be a leak in the airbox?? getting lean at the high end? is backfiring usually lean or rich...?
 
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