cam timing gear replacement on 2000 Mercury Villager

I purchased this van cheap the previous owner had the timing belt replaced after the distributor locked up but he had problems with it not running correct after that! So I bought it for next to nothing and found that the cam timing gear that drives the distributor has a couple teeth missing & it jumps time occasionally. My question is how costly of a job is it to replace it?

Asked by for the 2000 Mercury Villager
You will need to replace the camshaft in the front cylinder head. Part will be too expensive from a Dealer. Try finding a used cylinder head at a used parts dealer. Pull the cam from the used head and install (with new bearings) in your cyl head. Repair will be pricy if you can't do it yourself.