Question about 1980 Suzuki GS 750 E

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Suzuki Hello everyone, my step-father gave me his old 1983 Suzuki GS750E. It's in great shape and for not having a bike in over 15 years I'm all for it. Here is the problem I'm having.... The bike starts and runs, garaged kept, but once in a while cylinder number 4 (on right side sitting on the bike) wont fire. I can pull the wire off that cylinder and the bike keeps running the same. There is new needle and seats, replaced the o-rings on the boot to the heads(found them leaking) also found a pin hole in the plastic cover for the diaphragm (looks like a rock hit it so I replaced it also). Carbs have been replaced with used ones because there was other problems my step-father fixed. I'm over here beating my head off the wall (seeing I pulled all my hair out already). I have also been over the really expensive service manual. Please HELP!! Thank you.

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2 thins are important to start the bike, SPARK and FUEL.
You can check spark plug, if it is weat and if it have spark.
Make the cylinder compression test, this way you can see, if the the valves are sealed and in what condition are the cylinders.

Posted on Apr 01, 2014


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Posted on Jan 02, 2017

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SOURCE: flooding on a 1979 suzuki gs750e

the floats in the carbs are stuck need to adjust the float levels in the carbs.  You may have adjusted them too high.

Posted on Apr 01, 2009

  • 1 Answer

SOURCE: Rear Carb leaks fuel out of overflow

Hole in the float. It fills with gas, sinks and fails to stop the fuel flow

Posted on Apr 25, 2009

  • 47 Answers

SOURCE: Suzuki GSF400 Bandit problems with tick over.

as you have replaced carbs you will need to retune for fuel intake also check its getting enough air ie.. air filter has been changed or is clogged

Posted on Jun 17, 2009

  • 78 Answers

SOURCE: suzuki 400 bandit carb tuning

hi worth while getting the carbs balanced
cheers jay

Posted on Jun 24, 2009

  • 3567 Answers

SOURCE: 1985 Suzuki GS700 - pull and clean carbs

Synchronizing and balancing the carbs will be a nightmare. I would make a diagram of what hoses attach where and mark each hose. If you remove any adjusting screws or jets, write down the number of turns it takes for removal and than put each one back the same number of turns. Before removing the carbs, drain them (assuming there is anything in them). Now get a spray can of Berrymans carb cleaner (or another brand), and fill the float bowls full of cleaner by disconnecting the fuel lines and spraying into each fuel line until the level in the line is reaching the top of the float bowl. Now wait for a couple of days while the cleaner softens the dried varnish residue in the carbs. Now remove the carbs as a set then dis-assemble and clean with a couple more cans of cleaner. 6807ee4.gif Getting the pilot jets cleaned out is the big trick. If it will not idle, the pilot jet is problem.

Below is a diagram of your carb. The same diagram with the entire carb assembly AND your entire bike can be found at Babbitt's.
Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock.


Posted on Jun 28, 2009

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