Question about 1993 Suzuki GSX-R 750 WP

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Surging 1993 750 GSXR resently purchased. At cruising speed the bike cuts in and out and jerks badly, when you give it it's fine, the previous owner said that the fuel **** is broke and to keep it on prime only. He went through changing jets and hotter plugs same thing. Is it constintly getting to much gas? 

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  • eriecollisio Jun 01, 2009

    does this mean the fuel **** in the prime position is still letting the proper amount of gas?

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I think your issue is while at a steady cruising speed one of the carbs is not allowing steady fuel flow. so when you nail it, you cant hear or feel it. or maybe you can just a bit right when you hit it. one thing you can do short of taking the carbs off and cleaning them is, take the air filter apart and start the bike rev it up high and with a large clean rag shove it into the back of carbs and cut off ALL AIR FLOW.. at the same time, twist throttle wide open. doing this will flood out and kill the engine. but at the same time, it will sometimes clean any debris or grime out of the jets. try it a couple times.. hope this helps.

Posted on May 31, 2009

  • tbrat44 Jun 01, 2009

    the jets in the carbs are what regulates how much fuel gets to the cylinders. you can run it in prime forever. the only thing prime does is allow fuel to the carbs without vacuum. but if a float sticks open you will know because you will have fuel leaking onto the ground, or possible into the air filter and even into the engine.

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