1984 HONDA NIGHTHAWK 700SC, MUST KEEP AT FULL CHOKE

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BIRDMAN504
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1984 HONDA NIGHTHAWK 700SC, MUST KEEP AT FULL CHOKE

#1 Unread post by BIRDMAN504 »

I HAVE A 84' NIGHTHAWK 700, THE GUY I GOT IT FROM TOLD ME IT'S BEEN SITTING UP FOR A WHILE. I HAD THE CARBS CLEANED, AND THEN RAN A FEW TANKS OF HIGH OCTANE GAS IN IT. IT SEEMS THAT IT WAS RUNNING A LITTLE BETTER EACH TIME I TOOK IT OUT, BUT NOW IT SEEMS TO HAVE PLAINED OFF. I HAVE TO KEEP THE CHOKE OPEN TO TAKE OFF, WHICH KEEPS THE RPM'S HIGH. IF I CLOSE THE CHOKE UNTIL THE RPM'S DROP TO 1000, IT WILL RUN, BUT IF I TRY TO TAKE OFF IN 1ST GEAR IT KILLS. ALSO WHILE RUNNING IT WITH THE CHOKE OPEN LIKE THAT, I NOTICED A LITTLE WHITE SMOKE COMING FROM THE EXHAUST (MORE FROM THE RIGHT PIPE THAN THE LEFT). I CAN RIDE IT AS LONG AS I KEEP THE CHOKE OPEN AROUND FIRST GEAR, AFTER THAT I CAN CLOSE THE CHOKE IN THE OTHER GEARS. I WOULD LIKE ANY INFO ON WHAT MAY BE THE CAUSE OF THIS PROBLEM, BECAUSE I KNOW IT CAN'T BE GOOD FOR THE BIKE TO RUN IT WITH AN OPEN CHOKE ALL OF THE TIME. THANK YOU FOR ANY INPUT.

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Johnj
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#2 Unread post by Johnj »

Howdy there Birdman. How you doing. It is considered to be bad form to type all in capitals on a forum. it indicates that you're yelling at everyone.

It sounds like you may have a leak in the intake somewhere. Try spraying WD-40 on the rubbers in between the carburetors and the engine.
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