1989 B350 5.2 V8:

The manual I have says there are 2 o-rings on the injector, and one in the injector cap. I either lost both of these or the manual is incorrect, does anyone know for sure if there should be an oring between the cap and the injector please? These are the 2 injectors in the throttle body on this TBI van

thanks!

 

I have a 1989 Dodge Ram Van factory service manual. It shows two O-rings on each injector. It does not specifically show one for the cap. It says to lubricate the injector O-Rings before installation. For the cap, it only says to press down until flush with the upper injector O-ring flange.

I thought most B350's came with the 5.9L (360) engine, not the 5.2L (318)? The 5.9L has larger throttle body bores, and I believe the injectors themselves might be larger.

Good Luck.