I purchased a second hand MT337B Snap On Fuel Pressure Gauge Set. It is only 2 years old in mint condition.
If you are familiar with this setup, it comes
with two chrome test port adaptors.
The one adaptor fits snugly onto the quick coupler as it should - that is the FIA120 adaptor.
The other adaptor FIA130 is completly loose once you put it onto the quick coupler.
Anyone know the secret to making the FIA130 one fit snugly on the quick coupler? There is no way it will work - gas will leak everywhere even if you use the o-rings.
I also have some o-rings and rubber gaskets in the kit. It doesn't say much in the instruction manual either.
Anyone???
