There is a flow restriction somewhere maybe the oil galleys are plugged, check the valve cover gasket on the side not getting oil. Also, I have seen this problem caused by broken rocker arms. Have you removed the valve cover on the side not getting oil to see what is actually happening, this would be the first thing to do.
My driver side lifters and rockers not getting any oil just one side anyone kno the problem
2004 Mercury Grand Marquis LS Ultimate
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Maintenance & Repair
When we turn the wheel while driving there is faint hissing noise, or maybe a whizzing noise. Checked fluid for power steering and it is good. Ideas?
2005 Mercury Grand Marquis GS Convenience
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Maintenance & Repair
when the motor is running sometimes when driving sometimes when setting still it makes a noise that sounds a lot like a fog horn the noise comes out of the breather tube that goes from the air intake ...
1993 Mercury Grand Marquis
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Maintenance & Repair
2003 Mercury Grand Marquis Heat/Air Switch makes grinding noise when turned on. Replaced Blower Motor but have same noise. Any help or suggestions?
2003 Mercury Grand Marquis GS
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Maintenance & Repair
Engine computer
2002 Mercury Grand Marquis LS Ultimate
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Maintenance & Repair
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