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Old 02-07-2010, 08:10 AM   #1
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Default Low compression*** why??

05 5.4 3v 140k has low compression on #3 cylinder and 1-2-4 on the rt bank are weak. has no engine noise, just cel, rough idle,low on power. what would cause low compression??
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Old 02-07-2010, 08:13 AM   #2
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They are all on the same side so I would check for a possible head gasket problem. Have you done a leak down test?
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Old 02-13-2010, 08:31 AM   #3
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just picked up from the dealership.

LIFTER, ROCKER ARM AND CAM SHAFT $835

i will try and post pics later
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Old 02-16-2010, 06:49 AM   #4
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Kinda odd that you had no noise with needing that type of repair.
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