I changed the coils, spark plugs, sensors and it's worse. now I'm loosing coolant and it still says bank 1and 2 lean misfire 7 and 2.
Dec 4, 2020 at 6:00 PM
Loss of power, misfire
2001 LINCOLN NAVIGATOR
NATHAN3698
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Hi,
A lean mixture is usually the result of either a weak fuel pump or an engine vacuum leak. Have you checked those things?
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
Next, where is the coolant leaking from? Can you locate the leak or is there nothing that seems like an issue? I'm asking because if you are not seeing the leak, it could be related to a head gasket issue. Take a look through this link:
https://www.2carpros.com/articles/head-gasket-blown-test
Let me know exactly what is happening. If it is possible, record it running so I can hear it. Also, if you can, let me know specifically what diagnostic trouble codes are present.
Take care,
Joe
A lean mixture is usually the result of either a weak fuel pump or an engine vacuum leak. Have you checked those things?
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
Next, where is the coolant leaking from? Can you locate the leak or is there nothing that seems like an issue? I'm asking because if you are not seeing the leak, it could be related to a head gasket issue. Take a look through this link:
https://www.2carpros.com/articles/head-gasket-blown-test
Let me know exactly what is happening. If it is possible, record it running so I can hear it. Also, if you can, let me know specifically what diagnostic trouble codes are present.
Take care,
Joe
Dec 4, 2020 at 7:58 PM