3 hours ago at 11pm I finished my 3 door 1.6gl 1986 sleeper with a cosworth yb engine and drivetrain from a sapphire 4x4. Im documenting the build, so expect expect a project thread soon.
After 20 minutes of perfect running except for a 1500 rpm idle, the engine starts to run like its not getting enough fuel above 3500rpm. It's stuttering and is cutting out. If I turn it off and start it again without waiting it runs ok for about 5 minutes and then it displays the same problem.
The engine and ecu are oem and no modifications have been done to it. The fuel pump is good enough for 300hp.
I tested 2 wiring harnesses, so that shouldn't be a problem.