misfire diagnosis

[withku]

I’m trying to diagnose the misfire on my 2010 via ForScan, but I don’t know how to read any of the data. I did a DTC scan but there was nothing suggesting a misfire. I did do a misfire scan, but don’t know how to read it. Does anything look wrong? https://imgur.com/a/21WNk2P

https://docs.google.com/document/d/1GYEdoRoi_7L6lTZUj5kByziyL2DiUdbcDHaFqfjBXtk/edit

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[Johnbigdog]

I dont see a PID there thats going to tell you which cylinder is misfiring.

See if there is a cylinder acceleration Paramariter IDentification (PID) for each cylinder and get the mis to act up. It should read CYL_X_ACCl, x reading 1-6. The cylinder that is misfiring will drop below the 0 mark. Or drive it untill you get a P03xx code to tell you if there is one cylinder or multiple cylinders misfiring.

 

[Ta2dResqr]

Picture 2 and 3 both show Cylinder 1 has a 3.63% misfire rate (highlighted in red). It also shows a misfire count of 291. I would suggest checking the condition of the plug. Then I would swap the coil with another cylinder and see if the problem moves with the coil. If it moves, the coil is the issue. If it doesn't move and the spark plug is in good condition, continue down the line. Is it getting fuel? Does it have compression? Being that this is only occurring under load, I suspect you will find an issue with the plug or coil. Personally, I would suggest a set of MSD coils "used" from Amazon (currently only see new but, they quite often pop up as "used" for $150 or less and they are simply returns) and a set of Brisk Racing Silver spark plugs.