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MP7 engine miss


steeler
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2008 MP7 start it up, runs ok but after it warms up a few minutes will start slowly developing a miss, then eventually all throw codes for #1 and #2 injectors with an fmi 5'. Kinda strange to me that this 2 injectors shut off at the exact same time.

New engine harness and tried a different ecu. Any other ideas besides replacing the 2 injectors?

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I once had an OHC engine break a unit injector top spring. When I’d start the engine the broken piece would start dancing around striking and shorting out the harness connection. It had that symptom only didn’t take minutes to develop. I’ve also had an ECM losing injector drivers for sister cylinder injectors simultaneously, 1&6. Again, not your case. 

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