![]() Refill the system and proceed to Step 4c. Also replace the oil cooler at this point if necessary as outlined in Step 2. Replace the heater core if necessary, refer to Workshop Manual Section 412-02. Inspect for external leaks especially in the heater core area. Pressurize the cooling system until the gauge pressure levels off. Re-pressure test again, if leaks are still present replace the degas bottle, refer to Workshop Manual, Section 303-03.Īfter verifying that the degas bottle and pressure cap are in good condition proceed to Step 4.ĮGR COOLER TEST: Install a pressure tester in-line with the degas bottle hose using Rotunda 014-R1068 adapter (Figure 3). Re-pressure test, if leaks are still present replace the pressure cap. Small nicks can be removed by light sanding with fine emery cloth. Check the degas bottle fill neck lip for nicks or cracks. If the gauge pressure drops, apply soapy water around the cap to find any leaks. Wait 30 seconds, if the gauge holds steady pressure, the pressure cap and degas bottle fill neck lip are good. Pressurize the degas bottle until the gauge pressure levels off, typically between 12-18 psi (83-124 kPa). Pressurize the degas bottle by using slow and steady pushes on the tester pump handle (not quick jerking pushes). ![]() Then isolate the degas bottle by securely pinching off (or plugging) the other intake deaeration (small) line, and the large hose at the bottom of the bottle between the bottle and the tee fitting. As shown in Figure 2, install the pressure tester to one (1) of the two (2) small ports near the top of the bottle. Refer to Workshop Manual, Section 303-01C.Ĭheck for proper operation of the pressure cap and its seal to the degas bottle. However, first perform all steps through Step 5 before replacing the oil cooler. If EOT IS NOT within 25° F (14° C) of ECT during the concern, replace the oil cooler. EOT should be about 225° F (107° C) when the ECT is 200° F (93° C). Verify that ECT and EOT PIDs are within specified ranges (see PC/ED Section 1: Description and Operation of ECT, EOT). NOTE: OVER-BOOST CONDITIONS (HIGHER THAN SPECIFIED MGP) WILL RESULT IN EXCESSIVE CYLINDER PRESSURES, AND MAY BE CAUSED BY ONE (1) OF THE FOLLOWING: IRREGULAR RESPONSE IN VARIABLE GEOMETRY TURBO, BIASED EXHAUST PRESSURE SENSOR, AND/OR IRREGULAR EXHAUST GAS RECIRCULATION. Repair any faults then proceed with the TSB. If PIDs are not within specification, or DTCs are retrieved, refer to PC/ED pinpoint tests. Verify that MGP, BARO, EGR, EP, MAF and MAP PIDs are within specification, and the EP PID value is within 1.5 psi (10.34 kPa) of the MAP and BARO PID values with key on engine off (KOEO). Then using WDS datalogger, access the following PIDs and road test the vehicle: OIL TENDS TO ADHERE TO THE RUBBER AND RESISTS NORMAL FLUSHING.Ĭheck for diagnostic trouble codes (DTCs). NOTE: IT MAY BE NECESSARY TO FURTHER REMOVE ALL COOLANT HOSES (RADIATOR, DEGAS, AND HEATER) AND CLEAN THEM SEPARATELY. REFER TO TSB 05-2-5 FOR ADDITIONAL INFORMATION.Ĭlean cooling system with Motorcraft Premium Cooling System Flush (VC-1) following Workshop Manual procedure in Section 303-03, Flushing - Engine and Radiator. NOTE: ON 2004 E-SERIES 6.0L BUILT BEFORE, IF THE OIL COOLER IS REPLACED, ALSO REPLACE THE HEATER CORE INLET HOSE, THE REVISED HOSE CONTAINS AN INTERNAL FLOW RESTRICTOR (FIGURE 1). Replace the oil cooler, refer to Workshop Manual, Section 303-01C. ![]() If oil is present in coolant, perform the following repair: If the degas bottle is not overfull, and is still venting out coolant, refer to the following Service Procedure.Ĭheck for cross contamination of engine oil into cooling system by inspecting the coolant condition in the degas bottle. Overfilled coolant levels will cause coolant to vent from the degas bottle cap. The level should be at the "MIN" line in the degas bottle at operating temperature. ![]() Prior to making any repairs verify the coolant level is not overfull. The condition typically occurs when operating the vehicle under a load such as trailer towing, uphill driving, or both. Some 2003-2007 F-Super Duty, 2003-2005 Excursion and 2004-2006 E-Series vehicles, all equipped with a 6.0L engine, may exhibit coolant venting from the degas bottle cap. 06-21-2 COOLANT DEGAS BOTTLE OVERFLOW - 6.0 ![]()
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