This topic contains 1 reply, has 2 voices, and was last updated by 
Richard Kirshy 2 years ago.
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I have a code p1399 with random misfire on cylinders 3 and 4.. I just did a valve adjustment, spark plugs and wires. There is an exhaust leak at the manifold. What could I do from here?
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Assuming you did these things after the code showed up.
Might check for a blocked passage in the EGR system
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