12 valve running rough
 

I gott a 95 12 valve automatic that i rebuilt recently with new pistons, arps, an hamilton cam. Also had some porting work done on head also. Got 5-12 SDX injectors with 4000 gov springs, rack plug, air dog 100, and some afc mods. Any how after a few miles of test driving it started missing real bad at any rpm over an idle. Bluish grey smoke and couldnt get over 500 rpms without stumbling really bad.

Did my pump gears slip and the timing is retarded? I had it set at 19 degrees BTDC

I think it would def be worth checking the timing.

Ditto. Those are some common signs of slipped timing.

Thanks guys ill look into it!

if it is before top dead center, your timing is not 19* it would be less.

blue smoke or blueish, means oil being burnt, have you checked your turbo.

hope it helps