Fuel Pump Test 2

Connect a short section of hose and a vacuum gauge to fuel pump inlet side. Start or crank engine until maximum vacuum reading is obtained. Vacuum reading should be 15 in. Hg.

NOTE: If fuel pump fails both Tests 1 and 2, replace fuel pump. If fuel pump failed Test 1 and passes Test 2, check fuel hoses and replace as necessary. If pump and hoses are okay and fuel delivery is still insufficient, remove fuel tank and inspect fuel tank strainer.