Question

My boyfriend is a mechanic, he believes that I have a cracked cylinder leak. I have a 2000 Ford explorer xls... V6 4 cylinder drivers side. He says that the anti freeze is leaking into the cylinder causing burning antifreeze ( I have to keep a jug of water and/or Synthetic mixture antifreeze to top it off. Any way once this happens the check engine light comes on, (did something like this not too long ago)and he says it's the same cylinder that then causes the engine to skip and do other things. He scanned the truck put in the codes did a couple of other things and the Skipping goes away and truck drives smoothly. How can you be so sure that it's the cylinder without actually without doing a dye test or pull of the head gasket, get to the cylinder. I'm out of work have no money he wants to go to to a couple of trust worthy Recked car lots (junk yards) and get the part he needs I'm assumming the cylinder head, get the cost and replace it. I'm out of work. What do you think of K&Wsealant