Easy pressurized fuel cap mod for fuel system testing and bleeding

[actionpaintball]

I have done this a few ways (from a airline fitting to cardboard and duct tape). I think this is the easiest. Drill a hole at .453" or .625" (standard sizes)...insert a standard valve stem. I hook it up to a C02 tank regulated to 2-3 psi, but any regulated air source would work. It makes bleeding and fuel system diagnosis MUCH easier. That cracked seal or bad fitting will get wet real fast... Using it for a Ft. Lee recovery tomorrow. That is a Velvac 600168 cap.

 

[wreckerman893]

If you own anything with a two stroke Detroit in it and you don't have a cap with a valve stem in it you will hate living the first time you run it out of fuel. All of our HEMMT's in Korea had that setup on them.

 

[MtnSnow]

Great idea!