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Vulcan 750 carb question

Had carbs removed and cleaned, have been reinstalled but "mechanic" doing the job got arrested, now I have no idea how to hook the fuel/vac lines. a diagram would REALLY help.

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They are two different size lines vac is usually smaller and gas is bigger, hook them up to the corresponding sized nipples on the carbs.
could be more help if I could see it!! sorry

Posted on Jul 12, 2013


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Posted on Jan 02, 2017

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SOURCE: i have a 89 suzuki gsxr 750,it fires but will not

Clean the air filter and, if you have one, remove the water trap bowl on the fuel petcock and clean it. How good is the battery? Install new STOCK plugs. Bear in mind it may be time for carb kits. Other than your cleaning the carbs, the carb kits and balancing and synchronizing of the carbs are best left for the shop to do.

Check the exhaust pipes. If there is a restriction in the burned gases exiting the tailpipe then the bike will not run right, will loose power and even die if too much back pressure builds up. Disconnect the exhaust system and tick off the neighbors with a quick ride around the block without a muffler. If the engine still dies then exhaust is not likely to be the problem.

Check the compression on all cylinders. Depending on the compression, the bike may be ready for a valve job. If you pull the head for the valve job then you might as well consider re-boring the cylinders and install new pistons and rings. Bear in mind, doing a valve job and / or pistons is not recommended for the novice. The good part is that when the work is finished you will effectively have a new engine.

Please rate this solution as "FixYa" if I have answered your questions. Thanks!

Posted on Mar 25, 2009

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SOURCE: Fuel leak where fuel tube goes into carb.

Turn the petcock valve off and the flow should stop. If the fuel line is long enough, cut the broken line just above the break then re-attach to the nipple.

Posted on May 22, 2009

  • 302 Answers

SOURCE: Carb. issues/ vacum lines/fuel lines

Try here:

Posted on Sep 23, 2009

  • 1 Answer

SOURCE: vacum and fuel line diagram needed

I have an 89 Katana and don't know where the two vacuum lines on the top of the carbs go

Posted on May 06, 2010

  • 345 Answers

SOURCE: need fuel and vacuum line info

there should only 2 lines from the fuel tap, one for fuel, and the other for vacume, the smaller diameter hose is the vacume, and the larger hose is fuel. fuel hose will go to carby, and the vacume hose to the carby inlet manifold.

Posted on May 24, 2010

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