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« Last post by Niamh on December 02, 2023, 11:52:22 AM »
That's a combined intake temp and manifold pressure sensor, I guess the injector is in the head or between the head and throttle body. I'd look at fuel pressure and possibly this sensor. I had weird issues on my Robin that pointed at fuel or ignition system. Swapped coils, leads, plugs, throttle body, ECU and the entire fuel supply system. Even after swapping in another engine it still gave me trouble. Turned out the lambda sensor was crusted up but only gave issues when cold, a time when the lambda reading isn't even used. EFI is a bitch to diagnose without reading fault codes and live sensor data.