Disconnecting GY6 Emissions? By bigkahuna427 (Read 24,412 times)

[crwford]

If running good leave it alone for you will for ever screwing with it and asking questions to keep it running.

[lostforawhile]

the issue is these are very poorly made components, that only function on paper, if they were made decently I would say leave them alone, but they will most likely fail. How the valve is supposed to work, (someone sent me a "functioning" one) it's actually called an anti backfire valve. during high vacuum conditions, throttle suddenly closed for example, vacuum is supposed to close the valve,blocking air from the exhaust, from looking at that valve, there is no way these little engines can close it.

[crwford]

Mine been on for 10,000 miles never touched anything thing on any of my 3 bikes. Are you sure your vacuum hoses are not leaking are just lose or just bad.

[lostforawhile]

I checked it with a hand vacuum gauge, I spent years working on vacuum nightmare emissions on cars, so I'm pretty good at this stuff  

[crwford]

while yes in the 70 nightmare was right but not now. Now getting back to your problem the anti backfire valve are you sure all you vacuum line are on the right way and are not mixed up? Look what you are trying to say every one don't work and I'm telling you I have 3 that do work just got a Dang Fang 150cc and it works so that's now 4. I but you need to find a paper work on system mybe even call Rapid Repair listed above Jim has a great deal of knowledge and will help you even if you didn't buy from him.

[lostforawhile]

why fix it?it does nothing  anyway, it's eye candy to make the EPA happy, the stock converter muffler clogged at  2000 miles anyway 

[cyborg]

Get rid of it is my vote,,,check the library there’s a tutorial on removing it correctly

[lostforawhile]

you can even cut off the tube and weld up the hole in the plate to make your own blockoff plate