88 RV chassis Fuel injected 460 single tank. Turn key on no fuel pump noise.Engine will pop off on starting fluid. Where is the inertia switch located? Does this have a pump in the tank and a second pump mounted by the filter? Is there a fuse for the fuel pump? This ran fine a few months ago and now nothing. I do not have a manual for this vehicle so i apoligize for the questions. It seems to have no power at the pump by the filter.Checked grounds. Thanks for any info/help. SD