Hello all,
From all of the technical documentation I can find, the 3Y engine was equipped with vacuum timing advance and the 4Y with mechanical/electronic. Does anyone know if they're interchangeable?
The reason I ask is, one of the people with whom I work has an '86 4wd cargo that he wants to sell - but it's not starting. From the symptoms, it sounds like a problem with the ignition coil. He says the original owner replaced a 4Y engine with a 3Y. The engine does look like a 3Y. Tonight I examined his distributor; it looks like the ones on the 4Y engines in all of my vans (no vacuum advancer assembly on the front of the distributor). I'd like to order the right parts for his ignition and get her running.