Okay well I have a 94 7.3 it smokes fairly bad Iam going thru a gallon of oil in roughly 3 days now it does have some leaks but those would prolly acct for maybe a quart of loss at most now Iam an extremely good auto mechanic Iam just not super familiar with diesel so the smoke does thin out as the truck warms upwhat I’ve done so far is did a compression check that was around 425 all but 1 that one was about 360 I took the pcv valve and put a sorta filter in it not enough to restrict airflow just keep the oil in the crank case it doesn’t blow the cap off the oil fill when u look under it looks like oil coming down the back of the head but above the exhaust port it’s dry so I believe it’s coming outta the exhaust port itself so valve steam seals? I know that if you bring each cylinder to TDC the valves can not drop in but how do you confirm tdc there’s no direct access in to the cylinder from the glow plug or the injector 1 more thing is the smoke increases when u let off the throttle thins out went u accelerate and has revved by itself a couple of times If u hold the throttle at about 15-1800 rpm not every time but it will takes off and red line itself just screaming and will not shutdown turn the key pull the injection pump wire all that u can’t kill it unless u choke it air off it’s like it takes and runs on it own oil any thoughts or pointed in the right direction would be appreciated thanks