Mechanics

F150 LOSS OFF COMPRESSION IN CYLINDER 3. NOTE I CHANGE IGNITION COIL AND PLUG. WHAT COULD BE THE CAUSE OF A 26% LOSS OF COMPRESSION ON CYLINDER 3.

2001 Ford F-150 • 160,000 miles

Fuel injection checked out ok
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Jazmanski
February 4, 2012.



If you lost compression on that cylinder, either you have an issue with a valve, head gasket, or rings.

Loss compression on no.3 cyl, could be a valve/ring/cylinder wear-confirm it-

Rasmataz
Feb 4, 2012.