World Superbike Racer
Join Date: Nov 2012
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The Dyno is a beast of a diagnostic tool. The DynoJet Dynometer is first and foremost a diagnostic tool. If your tuner is worth his rate he'll be able to tell you exactly what the problem is within a few hours. But diagnostics and tuning usually come at two different rates.
If your second cylinder isn't firing you need to test Compression, which will show potential issues with valves, head gasket, rings, etc.
While you're in there, test spark. A coil could be going bad. A quick trick to see if your injector is causing the problem is to just swap it out with another cylinder and see if the problem follows the swap. Also, test your fuel pump flow and pressure.
"I don't want to burden you with my problems... but I think I've outgrown my yacht."