i have a summit fuel pressure gauge under the hood that is liquid filled it seems to be bouncing a little bit would this be from the cold weather or is the gauge going down the drain? i just installed a fuel boss so i was wondering if that might have something to do with it and if i might need a snubber? i do not have an isolator as it is hooked up directly to the fuel line that i made? thanks guys

 

I have something similar from Jeg's. It is glycerin filled and will act a little different when it's colder outside. I don't have an isolator.