BOUNCING FUEL GAUGE
#1
Member
CRAFTSMAN
Thread Starter
Join Date: Apr 2006
Posts: 62
BOUNCING FUEL GAUGE
Just put together a sbc in a street/strip car , now we have noticed the fuel pressure gauge bouncing. 950 demon carb with magnafuel prostar 500 pump with adjustable pressure and 2 port regulator. checked everything for dirt or sticking bits but still does it, anyone had this happen before, still haven't ruled out faulty gauge(new).
#4
Senior Member
DYNO TECH
Join Date: Feb 2004
Location: Leonard, Texas
Posts: 414
If it's not the guage, check for flow through the filter or obstructions at the fuel bung . I've seen pump cavitation (sucking air) cause this same scenario. Also how large are the inlet and oulet fuel lines. Never have a smaller inlet than outlet. Just my $.02