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2013 1.0 Ecoboost Misfire

Mirez
Mirez
in Ford Fiesta Club

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Hey all, looking to diagnose (or at least narrow the options) for a misfiring ecoboost zetec-s.

I have no history of the vehicle so don't know the circumstances of the fault but its been sat for 10 months in my barn. The owners said they don't want it back so I'm contemplating what to do with it.

Ater charging the battery it fired right up but with a lumpy idle. Since no MIL light or fault codes, I replaced the plugs and packs but it's still misfiring, cylinder one plug was noticeably oily on the tip. You can unplug coil one and it drives the same so it's definitely that cylinder - remarkably well actually for a 2 cylinder! Interesting, even then no MIL or fault code but unplugging pack 2 or 3 causes it to stall and log a code.

Coolant seems fine, holding level.

So a compression test is next but I'm thinking it's either head gasket or piston rings. Any thoughts from anyone? Also, comments on repair this engine or replace it should it come to jt?

Cheers!

  • Quote


    The ecoboost 1.0 is not normally worth trying to repair other than what you have already tried

  • Quote

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