We have 1991 Ford Ranger pick up We are having trouble with the oil
pressure Replaced the oil pump and it did not help This particular model
does not have a distributor but does have a drive gear and shaft For some
reason the connection between the oil pump and the drive gear is not
mating There is a shaft that connects the two but after you run the
engine a few minutes is starts slipping and drops out of gear We get good
oil pressure for about 5 minutes and then goes to zero. Anyone have any
ideas how to fix this problem?