Hi all.
recently i had rebuild my erst (engine, gearbox, suspension, etc).
than i fitted mbc, didn't check the set up and when accelerating it went over 1,5bar. then something in the engine bay blown, it wasn't loud but i heard it. engine died and i couldn't start it again.
i checked compression, spark, fuel etc. everything was good. i even took off the head to check if pistons were ok.

then i changed kejetronic fuel distributor and it started.
when i was on my way to service workshop to set up afr it blown again, this time without almost no boost.

what could go wrong? what part of the fuel distributor could gone damage? i have to find it and replace.

i know the best way is to go to efi but at the moment i have to try to fix it.

thanks for any answer.