Gas Cap Problems

floridaboy · #1 (**permalink**) 07-10-2009, 02:13 PM

I have two bikes one has a Grubee engine and the other has a Dax engine. The gas cap on the Grubee vents like it should but the cap from the Dax engine does not vent right. When i look at the two i can not see any difference betwen the two. Has anyone had a venting problem and fixed it or found out what is the cause of the cap not venting? I know that i could just buy a new one but i like to know why some thing does not work.

Retmachinist · #2 (**permalink**) 07-10-2009, 02:33 PM

How can you tell it is not venting?

John

floridaboy · #3 (**permalink**) 07-10-2009, 02:45 PM

When i was useing the Dax cap when the engine tryed to die i could open up the cap and it would start running like it should. If i put the Grubee cap on it would run with no problems. Both bikes run with no problems with the Grubee cap. If i put the Dax cap on eather bike i have the problem of the engines dying after a short distance.

Retmachinist · #4 (**permalink**) 07-10-2009, 02:55 PM

Oh o.k. that explains that. I wasn't sure if you knew for sure if it was the cap not venting. You definitly have that figured out. I don't know what would cause that? I have had a lot of trouble with those cheesy caps the way the spring is in there but no venting problems.

John

floridaboy · #5 (**permalink**) 07-10-2009, 04:19 PM

It took me awile to find the problem but i still would like to know how the caps are vented and what makes the one not vent. I guss i could get another one and hope it is good and then take this one apart to see what makes it tick or not tick in this case. I thought i would ask incase someone has allready taken one apart and knows how they work.

Venice Motor Bikes · #6 (**permalink**) 07-10-2009, 06:46 PM

Drill a tiny hole in it, & use it!

floridaboy · #7 (**permalink**) 07-10-2009, 07:01 PM

I thought about that and was wanting to know if anyone had tryed it. Don't know if it will leak gas back on the tank. That would not be to good i would think.

Cabinfever1977 · #8 (**permalink**) 07-10-2009, 09:26 PM

you drill a tiny hole in the middle of the cap,and dont fill your tank past half full and none will leak out.

floridaboy · #9 (**permalink**) 07-20-2009, 09:53 AM

I found out if you turn the cap up side down and raise up the rubber gasket and look around the edge you will find the little vent hole. The cap that i had used a small slit not a hole like the the cap that worked good. I took a small bit and lined up with the slit on the outside edge of the cap and drilled through the edge and into the slit and made it larger. Problem solved and no hole in the top of cap that water can get in. Ypu only see the small hole ion the edge of cap.

Buddy · #10 (**permalink**) 07-20-2009, 08:45 PM

I've got the same problem with a DAX Titan. I can hear the cap venting when the bike is sitting but it vapor locks or something when riding. It stalls and won't start until the cap is loosened and tightened. I was told it's flooding but it's the opposite, it's starving. It'll idle up sometimes before dying, that's lean, not flooding. I haven't figured out how to remedy it yet.