A fuel pump can fail intermittently and fuel pressure can drop in lines after engine is stopped. Thie would require the fuel pressure to build up.
Fuel pressure has to be tested after vehicle is left idle for extended periods, meaning you need to install the pressure gauge, start engine. Stop it and leave it for exended periods to check. Upon initial ignition on, check if the fuel pump is priming.
Sunday, February 3rd, 2013 AT 4:21 PM