Stop in for a cup of coffee

I assume it has a carburetor. If so, it is likely the carb/spacer gasket. Seems to be a common problem.

If not, it might be the fuel pump regulator vacuum line (but I think these were on later models).

Its an EFI ...I sprayed the intake and upper plenum with carb cleaner looking for the leak but I didn't find anything there but huge problem is I didn't hear the vacuum leak when it was running in idle ... the leak comes and goes and I cant predict when it will show up