Ok first off I just recently got this truck yesterday. I traded my toyota t100 that needed a few things. Well I drove this 6.5 home and only went 14 miles total. He told me it needed an injector it was smoking white bit not terribly bad. Misses and has power loss. This morning i went to to start it and it smokes reallyyyy bad. Also the stock air box was removed and he had the hose from the cdr valve just hanging down. I noticed it was smoking out of that hose pretty good I guess it has blow by and when I pulled the hose up oil just dripped out of the valve on the end. This can't be good. Whenever I start it it has no power for about 20 secs ill hold the gas then all of s sudden it just comes alive like it has power but its still misisng and smokibg white and I need to figure out something with that cdr hose smoking so bad bcus it smokes out the front the front and all the smoke out the exhaust. The truck has about 300k miles. I needed somethin to get around for a few months and its looking like he band aided slot of things in it. Idk what todo am I basically screwed? Tha is any help appreciated

 

does the exhaust smell sweet? if so, sounds like it may need head gaskets, or worse, replacement heads.

if not, it will more than likely need a full rebuild