99 Ford escort sputtering problem?

Sounds like you got a cracked head. Need to check your oil and see iff it looks milking color. If so there is your problem or the block could be cracked.could be old vac lines,fitting,or seals like intake manifold check for leaks with warm soaping water. look for more bubbles. dude these test suck but my this lead you to your problem been there done that.