Mechanic question. new motor will not run smooth
it backfires uphills and when it warms up the motor cannot take even partial throttle.
I had the long block professionally rebuilt down to the cam berrings.
I had the heads built as well.
I installed the heads, and set the timing etc.
I am thinking it is in the rocker arm settings, but I would like someone to leave agreement to that before I delve much deeper.
I also get a trouble code on the dash, I have not checked what it is, but it could be from the extra fuel unburned...
this is an 1989 Chevy Astro v6 4.3 L motor.
looking forward to using this thread.