Got a 7.3 van here that we put in a Hmax turbo, injectors and IP all at the same time. I have it timed the best I can to 8.5 deg BTDC. Problem is it has a lope to it and smoke bad when cold and overall just isnt right. Its real hard to time cause any timming light I use it jumps all over and hard to figure out where it wants to be. I am using the Mac timming tool with a mac timming light adjusted to 8.5 deg advance. When the rpms are up the engine is smooth but not much power and no smoke and teh pump is supposed to be turned up and I turned the fuel screw a hair before installing it.
Any ideas?
Any ideas?