RON WHITLEY
Member
do the gas caps on an 03 pit bull provide a vent for the fuel tank my caps fit very tight and my bike seems to starve for fuel at times can let set five min then all is ok for a bit then same problem again
gas cap question
- Thread starter RON WHITLEY
- Start date
pauldeepsea
Guru
They do but you need to read about gas tank vent problems very common on our bikes
Mr. Wright
Knows some things
Gas cap answer:
First off, remove the cap, and if it still has the white center in it, unscrew it and throw it away. That will help with the venting.
Second, if it doesn't have the white center, put it to your lips and blow. If air will go through it, it's ok.
If your thinking it's not venting because it's hard to get off, that's probably not the case. If it is hard to unscrew, you have more than likely run gas with ethanol in it. That will swell the threads. BBchopper, a member on here makes aluminum threads to replace the plastic ones, or you can get a whole new cap off ebay.
First off, remove the cap, and if it still has the white center in it, unscrew it and throw it away. That will help with the venting.
Second, if it doesn't have the white center, put it to your lips and blow. If air will go through it, it's ok.
If your thinking it's not venting because it's hard to get off, that's probably not the case. If it is hard to unscrew, you have more than likely run gas with ethanol in it. That will swell the threads. BBchopper, a member on here makes aluminum threads to replace the plastic ones, or you can get a whole new cap off ebay.
RON WHITLEY
Member
I will check all that thank you so very much will post and let you know what I find to possibly help others
BWG56
Guru
I would like too add that the valve is a one way valve, lets air in the tank when running, not out if it is operating properly. I removed mine years ago and when the vent is removed the vapors from the gas condense on the paint saver and eventually got under the paint saver and lifted the paint, I had my tank painted not once but twice due to this condensation. Whenever I would gas up, I would see this liquid on the paint saver, now I have the vent on and the paint saver is dry when I remove the cap to gas up. If the vent is working correctly, I would then check the petcock filter.
cdogg556
Guru
I just had this happen to me recently, was out riding and bike starts to cut out and dies, sit for a few minutes and fires right up, get home and was gonna drain my tank to work on the bike (yes, it was on the stand wankers!) and remove the fuel line at the carb and nothing, not a drop of fuel, I was like WTF? So, unscrew the gas cap and the fuel starts running out! Vapor lock is not B.S! I removed the white breather valve and it continues to flow, the only problem is like Ker is saying that it will screw up your paint, maybe if I don't fill the tank all the way up that might help.
BWG56
Guru
Nope, your still going to get vapors coming out that will condense, look on the paint savor when your out and gassing up, did you try to blow, I mean blowing thru the valve? should only get air one way.
francoblay1
The Spaniard
BWG56
Guru
francoblay1
The Spaniard
cdogg556
Guru
Are you sure it was the cap and not that the petcock was turned off
Duhhh, that must have been it, the gas was off, thanks for the tip wanker!
