This can't be normal...
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Tourer
Joined: Sep 2007
Posts: 267
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From:
This can't be normal...
When I fire her up the first time no problems, after I have been riding for a while and everything is nice and hot, if I shut her off and try to start her right back up again like when you get gas, she will not fire up right away, she just turns over and over, then after a few mins she will start.
Any suggestions on this? I have a carb'd '02 Fatboy.
Thank you in advance for any suggestions or help.
Any suggestions on this? I have a carb'd '02 Fatboy.
Thank you in advance for any suggestions or help.
Ultimate HDF Member
Joined: Feb 2008
Posts: 5,615
Likes: 9
From: Escondido, CA
Pull the enrichener **** and see if that helps it start. It is not a choke! It adds fuel when it is pulled out. Also, don't leave it out to warm up the bike as it dumps extra fuel in that's not needed. Use the screw on the throttle to keep the rpms up for a minute or so until it's warm.
R.I.P. BROTHER
Joined: Dec 2008
Posts: 3,076
Likes: 6
From: Colorado Springs
How long has it been sitting? Bad gas, Plugged pilot jet, fouled plugs, vapor locking if its hot......
Start with the most obvious if it ran good before winter.
If the gas is old address it with fresh gas and add a little bit of that Heat crap to your fuel to get any water out of the carb bowl of tank.
A pilot jet can clog at anytime with a particle of Chit. You may want to pull and clean your carb...Best to replace that Pilot if you do.
Float level....High/low/stuck???
The obvious can get hard sometimes.
Start with the most obvious if it ran good before winter.
If the gas is old address it with fresh gas and add a little bit of that Heat crap to your fuel to get any water out of the carb bowl of tank.
A pilot jet can clog at anytime with a particle of Chit. You may want to pull and clean your carb...Best to replace that Pilot if you do.
Float level....High/low/stuck???
The obvious can get hard sometimes.
Thread Starter
|
Tourer
Joined: Sep 2007
Posts: 267
Likes: 0
From:
How long has it been sitting? Bad gas, Plugged pilot jet, fouled plugs, vapor locking if its hot......
Start with the most obvious if it ran good before winter.
If the gas is old address it with fresh gas and add a little bit of that Heat crap to your fuel to get any water out of the carb bowl of tank.
A pilot jet can clog at anytime with a particle of Chit. You may want to pull and clean your carb...Best to replace that Pilot if you do.
Float level....High/low/stuck???
The obvious can get hard sometimes.
Start with the most obvious if it ran good before winter.
If the gas is old address it with fresh gas and add a little bit of that Heat crap to your fuel to get any water out of the carb bowl of tank.
A pilot jet can clog at anytime with a particle of Chit. You may want to pull and clean your carb...Best to replace that Pilot if you do.
Float level....High/low/stuck???
The obvious can get hard sometimes.
If the carb needed cleaning wouldn't it also make the initial startup bad as well? other then this little situation she runs beautifully, she starts no prob and never sounds like she is idling rough, no bad spots in acceleration or anything.
What causes the vapor lock? I am learning here so sorry if this is really dumb question.
I do think I will pull the carb and clean it though as it could never hurt.
Thank you all for the tips so far/
Tourer
Joined: Jun 2006
Posts: 358
Likes: 1
From: Boston, Ma Living at Fort Hood, TX
vapor locking is when the fuel entering the carb is not completely liquid, some how your fuel is heating up a good deal and starting to "vaporize" making it hard for your bike to start up while hot. A good and quick way to see if this is your problem take a bottle of water and dump it on the carb, if she starts up right after you know that your vapor locking.
Russ
Russ
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Tourer
Joined: Sep 2007
Posts: 267
Likes: 0
From:
vapor locking is when the fuel entering the carb is not completely liquid, some how your fuel is heating up a good deal and starting to "vaporize" making it hard for your bike to start up while hot. A good and quick way to see if this is your problem take a bottle of water and dump it on the carb, if she starts up right after you know that your vapor locking.
Russ
Russ
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Road Master
Joined: Aug 2008
Posts: 1,195
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From: Sunny Seattle, WA
vapor locking is when the fuel entering the carb is not completely liquid, some how your fuel is heating up a good deal and starting to "vaporize" making it hard for your bike to start up while hot. A good and quick way to see if this is your problem take a bottle of water and dump it on the carb, if she starts up right after you know that your vapor locking.
Russ
Russ
Jon
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R.I.P. BROTHER
Joined: Dec 2008
Posts: 3,076
Likes: 6
From: Colorado Springs
This sounds like it fits the bill, I will have to check of course, but if this is the problem how do I go about fixing it? I mean it is not like I can make the engine cooler on the long rides right? So do i just have to readjust the fuel line going from the tank to the carb somehow?
Plagerized:
The bike just runs out of fuel due to vacuum in the tank not allowing the fuel to be fed by gravity to the carb, or fuel doesn't get to the carb due to gas boiling in the fuel line. Both can be cured easily by modifying the venting on the right side gas cap. Unscrew the cap and look at the center inside. There is a spring loaded one way valve in the middle and it can malfunction by either not letting air in freely causing the vacuum, or it can seal up and not let the expanded vapor out causing pressure and flooding the bike. Use a small (1/16" or less) drill to add a small vent hole by drilling one of the 4 plastic flat spots that encircle the center valve. Be careful not to drill clear through the outer cap. When you are done it will allow pressure to bleed off or air to enter to prevent vacuum.
The other thing to check in the fuel system is the vacuum petcock. Make sure the vacuum hose is connected to the manifold. This vacuum hose is what opens the petcock and if it loses vacuum the bike will run out of gas. Sometimes things that share the vacuum like Kuryakyn Hyperchargers can affect it also. Check the petcock by disconnecting the fuel line. There should be no gas flow. Crank the bike over and the vacuum should open the petcock and let the gas run out. If that works it's OK.