No one knows?
I already have newer engine from mk2b, should be straight swap. Spark is fine and only error code was p0303. All ignition parts are now new and no error codes. Could it be ecu?
There was lack of compression in third cylinder. I don't have time for repair so bought new engine from -04 Punto. 174000km driven with perfect service history. There was even Fiat spark plugs installed. There is a lot of practical improvements, dipstick for example. Almost direct fit, had to use old intake manifold (different map sensor). There is also ac so I'm thinking of fitting double alternators