Question about 2004 Harley Davidson VRSCB V-Rod

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Fuel valve Do I need to turn the fuel valve off to park the bike overnight or longer? Does it do any harm to leave it on?

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If the float valve is in good shape and everything else is OK, no, you don’t have to turn off the fuel petcock. However, if anything isn’t perfect you’ll have, at best, gas all over the bike and the floor. At worst, you’ll fill one cylinder with gas and the other cylinder will fire when you try to start it and you’ll go into hydro lock and bend a connecting rod

Posted on Nov 20, 2008


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1 Answer

Bike not running right

First how long has she sat up before you got it. If she sat up 6 months or longer you may need to clean the carb(s). The valve you are asking about, is called a petcock, it turns the fuel off/on to the carbs. Turn it off when you leave it setting for a week or longer. If you want to leave it sit a lot longer, crank up the engine and as its running turn off the valve (gas) let her run out so the fuel (gas) does not gum up your Carb.s Now back to why she quits unless the choke is pulled out. What is happining is the choke shuts off some of the air going into the carb.s This forces the gas to be pulled in past any stoped up gumed up vents, ports what have you. So she runs but not great. You can try this. Turn off the tank valve start her up, to run her out of gas. Get your hands on a Turkey baster, some Seafoam (it is a fuel cleaner) Take the line off of the tank valve, force some Seafoam into the carbs with the baster. Let it sit over night. Start her up next day, (get her outside she will smoke up the house). Hook up your tank, put in some freash gas. Do it again if its not any better. If after 2x it does not clear up. You will have to take the carb out and phy. clean it. repost if you need help with that.

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1 Answer

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1 Answer

Fuel valve

If the float valve is in good shape and everything else is OK no you don’t have to turn off the fuel petcock. However if anything isn’t perfect you’ll have, at best, gas all over the bike and the floor. At worst, you’ll fill one cylinder with gas and the other cylinder will fire when you try to start it and you’ll go into hydro lock and bend a connecting rod. Do you feel lucky? ,,,

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