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Hi, I'm Greg (Indy-Tech).Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply ASAP.Rgds Greg.
Okay sorry did not get back sooner was down feeling a little ill.
Okay both codes make sense first the misfire code P0306 and the P0087 which is a fuel supply issue .
Could be a bad fuel pump bad fuel filter etc,
You need to check the fuel pressure make sure its at the correct fuel pressure if low will trip this code .
May just be a bad fuel pump .
Restricted fuel lineHigh mileage vehicles or bad fuelFaulty fuel pump driver moduleWeak fuel pumpRestricted fuel pump supply lineFailed fuel pumpFaulty fuel pressure sensor.
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