Datsun problems

Datsun 280ZX

Cranks but often won't fire, or starts but won't stay running after sitting for years 1979–1983 Datsun 280ZX

Datsun 280Z

bogs down or won't crank after sitting 1975–1978 Datsun 280Z

Datsun 240Z

SU carbs running rich, black plugs, stalling at idle when hot 1970–1973 Datsun 240Z