Originally Posted by
Stratous
Yes, I have my generator gas exit just past the air box. I have a diesel, so dont have the vacuum options.
When running the generator on vacuum with a check valve between the bubbler, you need to make sure your generator has a small leak or something. The reason is as follows. The greatest vacuum is created at engine idle. Lets say your engine produces 20Hg at idle. Your hho gen is now at 20Hg as well, then when you step on the gas pedal the engine vacuum drops below 20Hg. That will cause the check valve to close which will not allow the HHO gen to equalize the vacuum pressure because the hho gen vacuum is greater than the engine vacuum. This will especialy become a problem in city driving.