2001 Ford F-150 4.6 Romeo Timing Chain Replacement
#1
2001 Ford F-150 4.6 Romeo Timing Chain Replacement
Timing chain guide was damaged and pieces had been drawn into oil pan and clogged the oil pump screen so oil pressure was reduced. You could hear the passenger side chain slapping around. The diver side appeared fine. So I replaced both timing chain, timing chain sprockets, tensioners, and guides. As engine has over 200,000 miles I also replaced the oil pump, oil pump screen, the water pump and all applicable gaskets/seals. Recently replaced spark plugs and boots so I just cleaned and checked gaps. Cleaned fuel injectors and all connectors prior to installation.
Carefully positioned the number one cylinder to TDC with keyway set to 90 degrees to the valve cover mounting surface as instructed. Unfortunately the camshaft position tool I ordered was not the right one for my vehicle and no local auto stores or Ford dealers had available so I used C clamps and wood wedges to keep camshafts from moving.
Well the driver side moved slightly but I was able to move back into place when installing the new chain.
The motor is running smoothly when in park but when placed in gear at idle begins to shake badly and when driven runs poorly, poor acceleration from start and noticeable loss of power.
I checked codes and I am getting P0401 which points to a problem with EGR or related components. P0171 System to Lean Bank 1. P0175 System Too Rich Bank 2. P0306 Cylinder 6 misfire.
I have checked and cleaned with contact cleaner all connectors that were removed. I also have checked all vacuum lines and their connections cleared the codes but they have returned.
My question is before I continue chasing my tail could these problems be caused by the camshaft moving and now the timing is off?? None of these codes came up prior to this overhaul and engine was running fine until the timing chain guide fell apart.
Carefully positioned the number one cylinder to TDC with keyway set to 90 degrees to the valve cover mounting surface as instructed. Unfortunately the camshaft position tool I ordered was not the right one for my vehicle and no local auto stores or Ford dealers had available so I used C clamps and wood wedges to keep camshafts from moving.
Well the driver side moved slightly but I was able to move back into place when installing the new chain.
The motor is running smoothly when in park but when placed in gear at idle begins to shake badly and when driven runs poorly, poor acceleration from start and noticeable loss of power.
I checked codes and I am getting P0401 which points to a problem with EGR or related components. P0171 System to Lean Bank 1. P0175 System Too Rich Bank 2. P0306 Cylinder 6 misfire.
I have checked and cleaned with contact cleaner all connectors that were removed. I also have checked all vacuum lines and their connections cleared the codes but they have returned.
My question is before I continue chasing my tail could these problems be caused by the camshaft moving and now the timing is off?? None of these codes came up prior to this overhaul and engine was running fine until the timing chain guide fell apart.
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lmadore
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
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08-08-2005 01:28 PM