Attention: TDR Forum Junkies 
don't know if this has been covered before--if it has, forgive me.
my mechanical Isspro EV fuel pressure gauge recently began to "chatter". i had tied into one of Ray T"s banjos on the VP 44 end of the hose from the fuel filter. figured i was getting the "hammer" effect of the VP44, but i don't think so. moved the banjo back to the filter end of the hose, but i also changed the fuel filter. problem fixed!! i think the fuel filter was dirty enough to cause the problem. sooo... ... . if your FP gauge begins to "chatter", check the fuel filter.
my mechanical Isspro EV fuel pressure gauge recently began to "chatter". i had tied into one of Ray T"s banjos on the VP 44 end of the hose from the fuel filter. figured i was getting the "hammer" effect of the VP44, but i don't think so. moved the banjo back to the filter end of the hose, but i also changed the fuel filter. problem fixed!! i think the fuel filter was dirty enough to cause the problem. sooo... ... . if your FP gauge begins to "chatter", check the fuel filter.
